From 7b324dd8f18919fc4d728bdb0afbcf27c8c02cb2 Mon Sep 17 00:00:00 2001
From: Alex Pott <alex.a.pott@googlemail.com>
Date: Mon, 17 Jan 2022 09:03:46 +0000
Subject: [PATCH] =?UTF-8?q?Issue=20#3197482=20by=20longwave,=20Spokje,=20T?=
 =?UTF-8?q?aran2L,=20murilohp,=20catch,=20G=C3=A1bor=20Hojtsy,=20daffie:?=
 =?UTF-8?q?=20Update=20Drupal=2010=20to=20depend=20on=20Symfony=205.4=20(a?=
 =?UTF-8?q?s=20a=20stepping=20stone=20to=20Symfony=206,=20for=20deprecatio?=
 =?UTF-8?q?n=20checking=20support)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 composer.json                                 |   14 +-
 composer.lock                                 | 1123 +++++++++--------
 .../Metapackage/CoreRecommended/composer.json |   49 +-
 .../Metapackage/DevDependencies/composer.json |   14 +-
 .../PinnedDevDependencies/composer.json       |   12 +-
 composer/Plugin/VendorHardening/Config.php    |    2 -
 core/composer.json                            |   21 +-
 core/includes/bootstrap.inc                   |   27 -
 .../ContainerAwareEventDispatcher.php         |   38 +-
 .../Component/EventDispatcher/Event.php       |    2 +-
 core/lib/Drupal/Core/Composer/Composer.php    |    2 -
 .../Compiler/DeprecatedServicePass.php        |    4 +-
 .../Compiler/MimeTypePass.php                 |   14 +-
 .../DependencyInjection/ContainerBuilder.php  |   17 -
 core/lib/Drupal/Core/DrupalKernel.php         |    4 -
 .../MimeType/ExtensionMimeTypeGuesser.php     |    3 +-
 .../Core/File/MimeType/MimeTypeGuesser.php    |   46 +-
 core/lib/Drupal/Core/Http/KernelEvent.php     |   88 --
 core/lib/Drupal/Core/Http/RequestStack.php    |    2 +-
 .../Core/Http/TrustedHostsRequestFactory.php  |   13 +-
 .../MimeType/ExtensionMimeTypeGuesser.php     |    4 +-
 .../File/MimeType/MimeTypeGuesser.php         |   22 +-
 .../EntityResource/EntityResourceTestBase.php |   12 +-
 .../user/tests/src/Unit/UserAuthTest.php      |   18 +-
 .../Core/DrupalKernel/DrupalKernelTest.php    |   14 -
 .../KernelTests/Core/File/MimeTypeTest.php    |   15 -
 .../Core/Routing/ExceptionHandlingTest.php    |    2 +-
 .../Core/TypedData/TypedDataTest.php          |    2 +-
 .../ContainerAwareEventDispatcherTest.php     |   38 +-
 .../Compiler/MimeTypePassTest.php             |   68 -
 .../ContainerBuilderTest.php                  |   14 -
 .../DrupalKernel/DrupalKernelLegacyTest.php   |    2 +-
 .../Tests/Core/File/MimeTypeGuesserTest.php   |   54 -
 .../Drupal/Tests/Core/Http/InputBagTest.php   |   10 -
 .../Listeners/DeprecationListenerTrait.php    |   13 -
 35 files changed, 712 insertions(+), 1071 deletions(-)
 delete mode 100644 core/lib/Drupal/Core/Http/KernelEvent.php
 delete mode 100644 core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/MimeTypePassTest.php
 delete mode 100644 core/tests/Drupal/Tests/Core/File/MimeTypeGuesserTest.php

diff --git a/composer.json b/composer.json
index 3f2706e28f41..0d4b093d74fb 100644
--- a/composer.json
+++ b/composer.json
@@ -24,16 +24,16 @@
         "mikey179/vfsstream": "^1.6.8",
         "phpunit/phpunit": "^9.5",
         "phpspec/prophecy-phpunit": "^2",
-        "symfony/css-selector": "^4.4",
+        "symfony/css-selector": "^5.4",
         "symfony/phpunit-bridge": "^5.4",
         "symfony/var-dumper": "^5.4",
-        "symfony/error-handler": "^4.4",
+        "symfony/error-handler": "^5.4",
         "justinrainbow/json-schema": "^5.2",
-        "symfony/filesystem": "^4.4",
-        "symfony/finder": "^4.4",
-        "symfony/lock": "^4.4",
-        "symfony/browser-kit": "^4.4",
-        "symfony/dom-crawler": "^4.4 !=4.4.5",
+        "symfony/filesystem": "^5.4",
+        "symfony/finder": "^5.4",
+        "symfony/lock": "^5.4",
+        "symfony/browser-kit": "^5.4",
+        "symfony/dom-crawler": "^5.4",
         "easyrdf/easyrdf": "^0.9 || ^1.0"
     },
     "replace": {
diff --git a/composer.lock b/composer.lock
index e6f41f52dc3d..35794d91c95b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "490321b85335eac0b33fbc05bcdbae26",
+    "content-hash": "6209de25fead07a04a71b6af893db664",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -452,7 +452,7 @@
             "dist": {
                 "type": "path",
                 "url": "core",
-                "reference": "0c0d32e4674b75c965916f8ec909674a0b9dd3e9"
+                "reference": "9b93035f22d45a6129f2709b54c86f062f11e972"
             },
             "require": {
                 "asm89/stack-cors": "^2.0.2",
@@ -479,21 +479,20 @@
                 "php": ">=8.0.2",
                 "psr/log": "^1.0",
                 "stack/builder": "^1.0",
-                "symfony/console": "^4.4",
-                "symfony/dependency-injection": "^4.4",
-                "symfony/event-dispatcher": "^4.4",
-                "symfony/http-foundation": "^4.4.7",
-                "symfony/http-kernel": "^4.4",
+                "symfony/console": "^5.4",
+                "symfony/dependency-injection": "^5.4",
+                "symfony/event-dispatcher": "^5.4",
+                "symfony/http-foundation": "^5.4",
+                "symfony/http-kernel": "^5.4",
                 "symfony/mime": "^5.4",
                 "symfony/polyfill-iconv": "^1.0",
                 "symfony/polyfill-php80": "^1.16",
-                "symfony/process": "^4.4",
+                "symfony/process": "^5.4",
                 "symfony/psr-http-message-bridge": "^2.0",
-                "symfony/routing": "^4.4",
-                "symfony/serializer": "^4.4",
-                "symfony/translation": "^4.4",
-                "symfony/validator": "^4.4",
-                "symfony/yaml": "^4.4.19",
+                "symfony/routing": "^5.4",
+                "symfony/serializer": "^5.4",
+                "symfony/validator": "^5.4",
+                "symfony/yaml": "^5.4",
                 "twig/twig": "^3.0",
                 "typo3/phar-stream-wrapper": "^3.1.3"
             },
@@ -1756,6 +1755,56 @@
             },
             "time": "2021-03-05T17:36:06+00:00"
         },
+        {
+            "name": "psr/event-dispatcher",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/event-dispatcher.git",
+                "reference": "dbefd12671e8a14ec7f180cab83036ed26714bb0"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/event-dispatcher/zipball/dbefd12671e8a14ec7f180cab83036ed26714bb0",
+                "reference": "dbefd12671e8a14ec7f180cab83036ed26714bb0",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\EventDispatcher\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Standard interfaces for event handling.",
+            "keywords": [
+                "events",
+                "psr",
+                "psr-14"
+            ],
+            "support": {
+                "issues": "https://github.com/php-fig/event-dispatcher/issues",
+                "source": "https://github.com/php-fig/event-dispatcher/tree/1.0.0"
+            },
+            "time": "2019-01-08T18:20:26+00:00"
+        },
         {
             "name": "psr/http-client",
             "version": "1.0.1",
@@ -2066,43 +2115,46 @@
         },
         {
             "name": "symfony/console",
-            "version": "v4.4.34",
+            "version": "v5.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "329b3a75cc6b16d435ba1b1a41df54a53382a3f0"
+                "reference": "a2c6b7ced2eb7799a35375fb9022519282b5405e"
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             "dist": {
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-                "reference": "329b3a75cc6b16d435ba1b1a41df54a53382a3f0",
+                "url": "https://api.github.com/repos/symfony/console/zipball/a2c6b7ced2eb7799a35375fb9022519282b5405e",
+                "reference": "a2c6b7ced2eb7799a35375fb9022519282b5405e",
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             },
             "require": {
-                "php": ">=7.1.3",
+                "php": ">=7.2.5",
+                "symfony/deprecation-contracts": "^2.1|^3",
                 "symfony/polyfill-mbstring": "~1.0",
-                "symfony/polyfill-php73": "^1.8",
+                "symfony/polyfill-php73": "^1.9",
                 "symfony/polyfill-php80": "^1.16",
-                "symfony/service-contracts": "^1.1|^2"
+                "symfony/service-contracts": "^1.1|^2|^3",
+                "symfony/string": "^5.1|^6.0"
             },
             "conflict": {
                 "psr/log": ">=3",
-                "symfony/dependency-injection": "<3.4",
-                "symfony/event-dispatcher": "<4.3|>=5",
+                "symfony/dependency-injection": "<4.4",
+                "symfony/dotenv": "<5.1",
+                "symfony/event-dispatcher": "<4.4",
                 "symfony/lock": "<4.4",
-                "symfony/process": "<3.3"
+                "symfony/process": "<4.4"
             },
             "provide": {
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             },
             "require-dev": {
                 "psr/log": "^1|^2",
-                "symfony/config": "^3.4|^4.0|^5.0",
-                "symfony/dependency-injection": "^3.4|^4.0|^5.0",
-                "symfony/event-dispatcher": "^4.3",
-                "symfony/lock": "^4.4|^5.0",
-                "symfony/process": "^3.4|^4.0|^5.0",
-                "symfony/var-dumper": "^4.3|^5.0"
+                "symfony/config": "^4.4|^5.0|^6.0",
+                "symfony/dependency-injection": "^4.4|^5.0|^6.0",
+                "symfony/event-dispatcher": "^4.4|^5.0|^6.0",
+                "symfony/lock": "^4.4|^5.0|^6.0",
+                "symfony/process": "^4.4|^5.0|^6.0",
+                "symfony/var-dumper": "^4.4|^5.0|^6.0"
             },
             "suggest": {
                 "psr/log": "For using the console logger",
@@ -2135,76 +2187,14 @@
             ],
             "description": "Eases the creation of beautiful and testable command line interfaces",
             "homepage": "https://symfony.com",
-            "support": {
-                "source": "https://github.com/symfony/console/tree/v4.4.34"
-            },
-            "funding": [
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-                    "type": "custom"
-                },
-                {
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-                    "type": "github"
-                },
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-                    "type": "tidelift"
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-            "time": "2021-11-04T12:23:33+00:00"
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-            "source": {
-                "type": "git",
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-            "require-dev": {
-                "symfony/http-kernel": "^3.4|^4.0|^5.0"
-            },
-            "type": "library",
-            "autoload": {
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-                    "Symfony\\Component\\Debug\\": ""
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-                "exclude-from-classmap": [
-                    "/Tests/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
-                }
+            "keywords": [
+                "cli",
+                "command line",
+                "console",
+                "terminal"
             ],
-            "description": "Provides tools to ease debugging PHP code",
-            "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/debug/tree/v4.4.31"
+                "source": "https://github.com/symfony/console/tree/v5.4.2"
             },
             "funding": [
                 {
@@ -2220,42 +2210,45 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-09-24T13:30:14+00:00"
+            "time": "2021-12-20T16:11:12+00:00"
         },
         {
             "name": "symfony/dependency-injection",
-            "version": "v4.4.34",
+            "version": "v5.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/dependency-injection.git",
-                "reference": "117d7f132ed7efbd535ec947709d49bec1b9d24b"
+                "reference": "ba94559be9738d77cd29e24b5d81cf3b89b7d628"
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-                "reference": "117d7f132ed7efbd535ec947709d49bec1b9d24b",
+                "url": "https://api.github.com/repos/symfony/dependency-injection/zipball/ba94559be9738d77cd29e24b5d81cf3b89b7d628",
+                "reference": "ba94559be9738d77cd29e24b5d81cf3b89b7d628",
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             },
             "require": {
-                "php": ">=7.1.3",
-                "psr/container": "^1.0",
+                "php": ">=7.2.5",
+                "psr/container": "^1.1.1",
+                "symfony/deprecation-contracts": "^2.1|^3",
                 "symfony/polyfill-php80": "^1.16",
+                "symfony/polyfill-php81": "^1.22",
                 "symfony/service-contracts": "^1.1.6|^2"
             },
             "conflict": {
-                "symfony/config": "<4.3|>=5.0",
-                "symfony/finder": "<3.4",
-                "symfony/proxy-manager-bridge": "<3.4",
-                "symfony/yaml": "<3.4"
+                "ext-psr": "<1.1|>=2",
+                "symfony/config": "<5.3",
+                "symfony/finder": "<4.4",
+                "symfony/proxy-manager-bridge": "<4.4",
+                "symfony/yaml": "<4.4"
             },
             "provide": {
                 "psr/container-implementation": "1.0",
                 "symfony/service-implementation": "1.0|2.0"
             },
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-                "symfony/config": "^4.3",
-                "symfony/expression-language": "^3.4|^4.0|^5.0",
-                "symfony/yaml": "^4.4|^5.0"
+                "symfony/config": "^5.3|^6.0",
+                "symfony/expression-language": "^4.4|^5.0|^6.0",
+                "symfony/yaml": "^4.4|^5.0|^6.0"
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@@ -2290,7 +2283,7 @@
             "description": "Allows you to standardize and centralize the way objects are constructed in your application",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/dependency-injection/tree/v4.4.34"
+                "source": "https://github.com/symfony/dependency-injection/tree/v5.4.2"
             },
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@@ -2306,7 +2299,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-11-15T14:42:25+00:00"
+            "time": "2021-12-29T10:10:35+00:00"
         },
         {
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@@ -2377,28 +2370,31 @@
         },
         {
             "name": "symfony/error-handler",
-            "version": "v4.4.34",
+            "version": "v5.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/error-handler.git",
-                "reference": "17785c374645def1e884d8ec49976c156c61db4d"
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-                "reference": "17785c374645def1e884d8ec49976c156c61db4d",
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             "require": {
-                "php": ">=7.1.3",
+                "php": ">=7.2.5",
                 "psr/log": "^1|^2|^3",
-                "symfony/debug": "^4.4.5",
-                "symfony/var-dumper": "^4.4|^5.0"
+                "symfony/var-dumper": "^4.4|^5.0|^6.0"
             },
             "require-dev": {
-                "symfony/http-kernel": "^4.4|^5.0",
-                "symfony/serializer": "^4.4|^5.0"
+                "symfony/deprecation-contracts": "^2.1|^3",
+                "symfony/http-kernel": "^4.4|^5.0|^6.0",
+                "symfony/serializer": "^4.4|^5.0|^6.0"
             },
+            "bin": [
+                "Resources/bin/patch-type-declarations"
+            ],
             "type": "library",
             "autoload": {
                 "psr-4": {
@@ -2425,7 +2421,7 @@
             "description": "Provides tools to manage errors and ease debugging PHP code",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/error-handler/tree/v4.4.34"
+                "source": "https://github.com/symfony/error-handler/tree/v5.4.2"
             },
             "funding": [
                 {
@@ -2441,43 +2437,44 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-11-12T14:57:39+00:00"
+            "time": "2021-12-19T20:02:00+00:00"
         },
         {
             "name": "symfony/event-dispatcher",
-            "version": "v4.4.34",
+            "version": "v5.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/event-dispatcher.git",
-                "reference": "1a024b45369c9d55d76b6b8a241bd20c9ea1cbd8"
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-                "reference": "1a024b45369c9d55d76b6b8a241bd20c9ea1cbd8",
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             "require": {
-                "php": ">=7.1.3",
-                "symfony/event-dispatcher-contracts": "^1.1",
+                "php": ">=7.2.5",
+                "symfony/deprecation-contracts": "^2.1|^3",
+                "symfony/event-dispatcher-contracts": "^2|^3",
                 "symfony/polyfill-php80": "^1.16"
             },
             "conflict": {
-                "symfony/dependency-injection": "<3.4"
+                "symfony/dependency-injection": "<4.4"
             },
             "provide": {
                 "psr/event-dispatcher-implementation": "1.0",
-                "symfony/event-dispatcher-implementation": "1.1"
+                "symfony/event-dispatcher-implementation": "2.0"
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-                "symfony/config": "^3.4|^4.0|^5.0",
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-                "symfony/service-contracts": "^1.1|^2",
-                "symfony/stopwatch": "^3.4|^4.0|^5.0"
+                "symfony/config": "^4.4|^5.0|^6.0",
+                "symfony/dependency-injection": "^4.4|^5.0|^6.0",
+                "symfony/error-handler": "^4.4|^5.0|^6.0",
+                "symfony/expression-language": "^4.4|^5.0|^6.0",
+                "symfony/http-foundation": "^4.4|^5.0|^6.0",
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+                "source": "https://github.com/symfony/translation-contracts/tree/v3.0.0"
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@@ -4013,63 +4120,69 @@
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-            "time": "2021-08-17T14:20:01+00:00"
+            "time": "2021-09-07T12:43:40+00:00"
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         {
             "name": "symfony/validator",
-            "version": "v4.4.35",
+            "version": "v5.4.2",
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                 "url": "https://github.com/symfony/validator.git",
-                "reference": "629f420d8350634fd8ed686d4472c1f10044b265"
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-                "reference": "629f420d8350634fd8ed686d4472c1f10044b265",
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             "require": {
-                "php": ">=7.1.3",
+                "php": ">=7.2.5",
+                "symfony/deprecation-contracts": "^2.1|^3",
                 "symfony/polyfill-ctype": "~1.8",
                 "symfony/polyfill-mbstring": "~1.0",
+                "symfony/polyfill-php73": "~1.0",
                 "symfony/polyfill-php80": "^1.16",
-                "symfony/translation-contracts": "^1.1|^2"
+                "symfony/translation-contracts": "^1.1|^2|^3"
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-                "phpunit/phpunit": "<4.8.35|<5.4.3,>=5.0",
-                "symfony/dependency-injection": "<3.4",
+                "doctrine/annotations": "<1.13",
+                "doctrine/cache": "<1.11",
+                "doctrine/lexer": "<1.1",
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                 "symfony/http-kernel": "<4.4",
-                "symfony/intl": "<4.3",
-                "symfony/translation": ">=5.0",
-                "symfony/yaml": "<3.4"
+                "symfony/intl": "<4.4",
+                "symfony/property-info": "<5.3",
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-                "doctrine/cache": "^1.0|^2.0",
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-                "symfony/property-info": "^3.4|^4.0|^5.0",
-                "symfony/translation": "^4.2",
-                "symfony/yaml": "^3.4|^4.0|^5.0"
+                "symfony/cache": "^4.4|^5.0|^6.0",
+                "symfony/config": "^4.4|^5.0|^6.0",
+                "symfony/console": "^4.4|^5.0|^6.0",
+                "symfony/dependency-injection": "^4.4|^5.0|^6.0",
+                "symfony/expression-language": "^5.1|^6.0",
+                "symfony/finder": "^4.4|^5.0|^6.0",
+                "symfony/http-client": "^4.4|^5.0|^6.0",
+                "symfony/http-foundation": "^4.4|^5.0|^6.0",
+                "symfony/http-kernel": "^4.4|^5.0|^6.0",
+                "symfony/intl": "^4.4|^5.0|^6.0",
+                "symfony/mime": "^4.4|^5.0|^6.0",
+                "symfony/property-access": "^4.4|^5.0|^6.0",
+                "symfony/property-info": "^5.3|^6.0",
+                "symfony/translation": "^4.4|^5.0|^6.0",
+                "symfony/yaml": "^4.4|^5.0|^6.0"
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                 "psr/cache-implementation": "For using the mapping cache.",
                 "symfony/config": "",
-                "symfony/expression-language": "For using the Expression validator",
+                "symfony/expression-language": "For using the Expression validator and the ExpressionLanguageSyntax constraints",
                 "symfony/http-foundation": "",
                 "symfony/intl": "",
                 "symfony/property-access": "For accessing properties within comparison constraints",
@@ -4103,7 +4216,7 @@
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             "support": {
-                "source": "https://github.com/symfony/validator/tree/v4.4.35"
+                "source": "https://github.com/symfony/validator/tree/v5.4.2"
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@@ -4119,20 +4232,20 @@
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+            "time": "2021-12-21T11:59:32+00:00"
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             "name": "symfony/var-dumper",
-            "version": "v5.4.0",
+            "version": "v5.4.2",
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                 "url": "https://github.com/symfony/var-dumper.git",
-                "reference": "89ab66eaef230c9cd1992de2e9a1b26652b127b9"
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-                "reference": "89ab66eaef230c9cd1992de2e9a1b26652b127b9",
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@@ -4192,7 +4305,7 @@
                 "dump"
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-                "source": "https://github.com/symfony/var-dumper/tree/v5.4.0"
+                "source": "https://github.com/symfony/var-dumper/tree/v5.4.2"
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@@ -4208,35 +4321,39 @@
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-            "time": "2021-11-29T15:30:56+00:00"
+            "time": "2021-12-29T10:10:35+00:00"
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-            "version": "v4.4.34",
+            "version": "v5.4.2",
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                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "2c309e258adeb9970229042be39b360d34986fad"
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-                "reference": "2c309e258adeb9970229042be39b360d34986fad",
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-                "symfony/polyfill-ctype": "~1.8"
+                "php": ">=7.2.5",
+                "symfony/deprecation-contracts": "^2.1|^3",
+                "symfony/polyfill-ctype": "^1.8"
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-                "symfony/console": "^3.4|^4.0|^5.0"
+                "symfony/console": "^5.3|^6.0"
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             "suggest": {
                 "symfony/console": "For validating YAML files using the lint command"
             },
+            "bin": [
+                "Resources/bin/yaml-lint"
+            ],
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@@ -4263,7 +4380,7 @@
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             "homepage": "https://symfony.com",
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-                "source": "https://github.com/symfony/yaml/tree/v4.4.34"
+                "source": "https://github.com/symfony/yaml/tree/v5.4.2"
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@@ -4279,7 +4396,7 @@
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@@ -7526,28 +7643,28 @@
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-            "version": "v4.4.27",
+            "version": "v5.4.2",
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                 "url": "https://github.com/symfony/browser-kit.git",
-                "reference": "9629d1524d8ced5a4ec3e94abdbd638b4ec8319b"
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-                "reference": "9629d1524d8ced5a4ec3e94abdbd638b4ec8319b",
+                "url": "https://api.github.com/repos/symfony/browser-kit/zipball/1fb93b0aab42392aa0a742db205173b49afaf80f",
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-                "php": ">=7.1.3",
-                "symfony/dom-crawler": "^3.4|^4.0|^5.0",
+                "php": ">=7.2.5",
+                "symfony/dom-crawler": "^4.4|^5.0|^6.0",
                 "symfony/polyfill-php80": "^1.16"
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             "require-dev": {
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-                "symfony/http-client": "^4.3|^5.0",
-                "symfony/mime": "^4.3|^5.0",
-                "symfony/process": "^3.4|^4.0|^5.0"
+                "symfony/css-selector": "^4.4|^5.0|^6.0",
+                "symfony/http-client": "^4.4|^5.0|^6.0",
+                "symfony/mime": "^4.4|^5.0|^6.0",
+                "symfony/process": "^4.4|^5.0|^6.0"
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@@ -7578,7 +7695,7 @@
             "description": "Simulates the behavior of a web browser, allowing you to make requests, click on links and submit forms programmatically",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/browser-kit/tree/v4.4.27"
+                "source": "https://github.com/symfony/browser-kit/tree/v5.4.2"
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@@ -7594,24 +7711,24 @@
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-            "time": "2021-07-21T12:19:41+00:00"
+            "time": "2021-12-16T21:58:21+00:00"
         },
         {
             "name": "symfony/css-selector",
-            "version": "v4.4.27",
+            "version": "v5.4.2",
             "source": {
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                 "url": "https://github.com/symfony/css-selector.git",
-                "reference": "5194f18bd80d106f11efa8f7cd0fbdcc3af96ce6"
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-                "reference": "5194f18bd80d106f11efa8f7cd0fbdcc3af96ce6",
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-                "php": ">=7.1.3",
+                "php": ">=7.2.5",
                 "symfony/polyfill-php80": "^1.16"
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@@ -7644,7 +7761,7 @@
             "description": "Converts CSS selectors to XPath expressions",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/css-selector/tree/v4.4.27"
+                "source": "https://github.com/symfony/css-selector/tree/v5.4.2"
             },
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@@ -7660,24 +7777,25 @@
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-            "time": "2021-07-21T12:19:41+00:00"
+            "time": "2021-12-16T21:58:21+00:00"
         },
         {
             "name": "symfony/dom-crawler",
-            "version": "v4.4.30",
+            "version": "v5.4.2",
             "source": {
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                 "url": "https://github.com/symfony/dom-crawler.git",
-                "reference": "4632ae3567746c7e915c33c67a2fb6ab746090c4"
+                "reference": "bb3bc3699779fc6d9646270789026a7e2cec7ec7"
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-                "reference": "4632ae3567746c7e915c33c67a2fb6ab746090c4",
+                "url": "https://api.github.com/repos/symfony/dom-crawler/zipball/bb3bc3699779fc6d9646270789026a7e2cec7ec7",
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                 "shasum": ""
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             "require": {
-                "php": ">=7.1.3",
+                "php": ">=7.2.5",
+                "symfony/deprecation-contracts": "^2.1|^3",
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                 "symfony/polyfill-mbstring": "~1.0",
                 "symfony/polyfill-php80": "^1.16"
@@ -7687,7 +7805,7 @@
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             "require-dev": {
                 "masterminds/html5": "^2.6",
-                "symfony/css-selector": "^3.4|^4.0|^5.0"
+                "symfony/css-selector": "^4.4|^5.0|^6.0"
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                 "symfony/css-selector": ""
@@ -7718,7 +7836,7 @@
             "description": "Eases DOM navigation for HTML and XML documents",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/dom-crawler/tree/v4.4.30"
+                "source": "https://github.com/symfony/dom-crawler/tree/v5.4.2"
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@@ -7734,25 +7852,26 @@
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-            "time": "2021-08-28T15:40:01+00:00"
+            "time": "2021-12-28T17:15:56+00:00"
         },
         {
             "name": "symfony/filesystem",
-            "version": "v4.4.27",
+            "version": "v5.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "517fb795794faf29086a77d99eb8f35e457837a7"
+                "reference": "731f917dc31edcffec2c6a777f3698c33bea8f01"
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-                "reference": "517fb795794faf29086a77d99eb8f35e457837a7",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/731f917dc31edcffec2c6a777f3698c33bea8f01",
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                 "shasum": ""
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             "require": {
-                "php": ">=7.1.3",
+                "php": ">=7.2.5",
                 "symfony/polyfill-ctype": "~1.8",
+                "symfony/polyfill-mbstring": "~1.8",
                 "symfony/polyfill-php80": "^1.16"
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@@ -7781,7 +7900,7 @@
             "description": "Provides basic utilities for the filesystem",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/filesystem/tree/v4.4.27"
+                "source": "https://github.com/symfony/filesystem/tree/v5.4.0"
             },
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                 {
@@ -7797,24 +7916,25 @@
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-            "time": "2021-07-21T12:19:41+00:00"
+            "time": "2021-10-28T13:39:27+00:00"
         },
         {
             "name": "symfony/finder",
-            "version": "v4.4.30",
+            "version": "v5.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "70362f1e112280d75b30087c7598b837c1b468b6"
+                "reference": "e77046c252be48c48a40816187ed527703c8f76c"
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-                "reference": "70362f1e112280d75b30087c7598b837c1b468b6",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/e77046c252be48c48a40816187ed527703c8f76c",
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-                "php": ">=7.1.3",
+                "php": ">=7.2.5",
+                "symfony/deprecation-contracts": "^2.1|^3",
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@@ -7843,7 +7963,7 @@
             "description": "Finds files and directories via an intuitive fluent interface",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/finder/tree/v4.4.30"
+                "source": "https://github.com/symfony/finder/tree/v5.4.2"
             },
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@@ -7859,32 +7979,33 @@
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-            "time": "2021-08-04T20:31:23+00:00"
+            "time": "2021-12-15T11:06:13+00:00"
         },
         {
             "name": "symfony/lock",
-            "version": "v4.4.33",
+            "version": "v5.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/lock.git",
-                "reference": "567d29b1bc6e3937652054dafc069151d17824a9"
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-                "reference": "567d29b1bc6e3937652054dafc069151d17824a9",
+                "url": "https://api.github.com/repos/symfony/lock/zipball/5e1d6adfff3b2586f2854188dd2fc35afe42dd59",
+                "reference": "5e1d6adfff3b2586f2854188dd2fc35afe42dd59",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7.1.3",
+                "php": ">=7.2.5",
                 "psr/log": "^1|^2|^3",
+                "symfony/deprecation-contracts": "^2.1|^3",
                 "symfony/polyfill-php80": "^1.16"
             },
             "conflict": {
-                "doctrine/dbal": "<2.6"
+                "doctrine/dbal": "<2.13"
             },
             "require-dev": {
-                "doctrine/dbal": "^2.6|^3.0",
+                "doctrine/dbal": "^2.13|^3.0",
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@@ -7921,7 +8042,7 @@
                 "semaphore"
             ],
             "support": {
-                "source": "https://github.com/symfony/lock/tree/v4.4.33"
+                "source": "https://github.com/symfony/lock/tree/v5.4.2"
             },
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@@ -7937,7 +8058,7 @@
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             ],
-            "time": "2021-10-05T20:27:01+00:00"
+            "time": "2021-12-29T10:12:08+00:00"
         },
         {
             "name": "symfony/phpunit-bridge",
@@ -8145,5 +8266,5 @@
     "platform-overrides": {
         "php": "8.0.2"
     },
-    "plugin-api-version": "2.1.0"
+    "plugin-api-version": "2.2.0"
 }
diff --git a/composer/Metapackage/CoreRecommended/composer.json b/composer/Metapackage/CoreRecommended/composer.json
index 88b05f6b2183..853c61733196 100644
--- a/composer/Metapackage/CoreRecommended/composer.json
+++ b/composer/Metapackage/CoreRecommended/composer.json
@@ -26,39 +26,40 @@
         "pear/pear_exception": "v1.0.2",
         "psr/cache": "1.0.1",
         "psr/container": "1.1.1",
+        "psr/event-dispatcher": "1.0.0",
         "psr/http-client": "1.0.1",
         "psr/http-factory": "1.0.1",
         "psr/http-message": "1.0.1",
         "psr/log": "1.1.4",
         "ralouphie/getallheaders": "3.0.3",
         "stack/builder": "v1.0.6",
-        "symfony/console": "v4.4.34",
-        "symfony/debug": "v4.4.31",
-        "symfony/dependency-injection": "v4.4.34",
+        "symfony/console": "v5.4.2",
+        "symfony/dependency-injection": "v5.4.2",
         "symfony/deprecation-contracts": "v2.5.0",
-        "symfony/error-handler": "v4.4.34",
-        "symfony/event-dispatcher": "v4.4.34",
-        "symfony/event-dispatcher-contracts": "v1.1.11",
-        "symfony/http-client-contracts": "v2.5.0",
-        "symfony/http-foundation": "v4.4.34",
-        "symfony/http-kernel": "v4.4.35",
-        "symfony/mime": "v5.4.0",
-        "symfony/polyfill-ctype": "v1.23.0",
-        "symfony/polyfill-iconv": "v1.23.0",
-        "symfony/polyfill-intl-idn": "v1.23.0",
-        "symfony/polyfill-intl-normalizer": "v1.23.0",
-        "symfony/polyfill-mbstring": "v1.23.1",
-        "symfony/polyfill-php80": "v1.23.1",
-        "symfony/process": "v4.4.35",
+        "symfony/error-handler": "v5.4.2",
+        "symfony/event-dispatcher": "v5.4.0",
+        "symfony/event-dispatcher-contracts": "v3.0.0",
+        "symfony/http-foundation": "v5.4.2",
+        "symfony/http-kernel": "v5.4.2",
+        "symfony/mime": "v5.4.2",
+        "symfony/polyfill-ctype": "v1.24.0",
+        "symfony/polyfill-iconv": "v1.24.0",
+        "symfony/polyfill-intl-grapheme": "v1.24.0",
+        "symfony/polyfill-intl-idn": "v1.24.0",
+        "symfony/polyfill-intl-normalizer": "v1.24.0",
+        "symfony/polyfill-mbstring": "v1.24.0",
+        "symfony/polyfill-php80": "v1.24.0",
+        "symfony/polyfill-php81": "v1.24.0",
+        "symfony/process": "v5.4.2",
         "symfony/psr-http-message-bridge": "v2.1.2",
-        "symfony/routing": "v4.4.34",
-        "symfony/serializer": "v4.4.35",
+        "symfony/routing": "v5.4.0",
+        "symfony/serializer": "v5.4.2",
         "symfony/service-contracts": "v2.5.0",
-        "symfony/translation": "v4.4.34",
-        "symfony/translation-contracts": "v2.5.0",
-        "symfony/validator": "v4.4.35",
-        "symfony/var-dumper": "v5.4.0",
-        "symfony/yaml": "v4.4.34",
+        "symfony/string": "v6.0.2",
+        "symfony/translation-contracts": "v3.0.0",
+        "symfony/validator": "v5.4.2",
+        "symfony/var-dumper": "v5.4.2",
+        "symfony/yaml": "v5.4.2",
         "twig/twig": "v3.3.7",
         "typo3/phar-stream-wrapper": "v3.1.7"
     }
diff --git a/composer/Metapackage/DevDependencies/composer.json b/composer/Metapackage/DevDependencies/composer.json
index 2c50609ec89a..3ed3c24e65f8 100644
--- a/composer/Metapackage/DevDependencies/composer.json
+++ b/composer/Metapackage/DevDependencies/composer.json
@@ -18,13 +18,13 @@
         "mikey179/vfsstream": "^1.6.8",
         "phpspec/prophecy-phpunit": "^2",
         "phpunit/phpunit": "^9.5",
-        "symfony/browser-kit": "^4.4",
-        "symfony/css-selector": "^4.4",
-        "symfony/dom-crawler": "^4.4 !=4.4.5",
-        "symfony/error-handler": "^4.4",
-        "symfony/filesystem": "^4.4",
-        "symfony/finder": "^4.4",
-        "symfony/lock": "^4.4",
+        "symfony/browser-kit": "^5.4",
+        "symfony/css-selector": "^5.4",
+        "symfony/dom-crawler": "^5.4",
+        "symfony/error-handler": "^5.4",
+        "symfony/filesystem": "^5.4",
+        "symfony/finder": "^5.4",
+        "symfony/lock": "^5.4",
         "symfony/phpunit-bridge": "^5.4",
         "symfony/var-dumper": "^5.4"
     }
diff --git a/composer/Metapackage/PinnedDevDependencies/composer.json b/composer/Metapackage/PinnedDevDependencies/composer.json
index efd325335412..60b30be386c4 100644
--- a/composer/Metapackage/PinnedDevDependencies/composer.json
+++ b/composer/Metapackage/PinnedDevDependencies/composer.json
@@ -58,12 +58,12 @@
         "seld/phar-utils": "1.1.2",
         "sirbrillig/phpcs-variable-analysis": "v2.11.2",
         "squizlabs/php_codesniffer": "3.6.1",
-        "symfony/browser-kit": "v4.4.27",
-        "symfony/css-selector": "v4.4.27",
-        "symfony/dom-crawler": "v4.4.30",
-        "symfony/filesystem": "v4.4.27",
-        "symfony/finder": "v4.4.30",
-        "symfony/lock": "v4.4.33",
+        "symfony/browser-kit": "v5.4.2",
+        "symfony/css-selector": "v5.4.2",
+        "symfony/dom-crawler": "v5.4.2",
+        "symfony/filesystem": "v5.4.0",
+        "symfony/finder": "v5.4.2",
+        "symfony/lock": "v5.4.2",
         "symfony/phpunit-bridge": "v5.4.0",
         "theseer/tokenizer": "1.2.1",
         "webmozart/assert": "1.10.0"
diff --git a/composer/Plugin/VendorHardening/Config.php b/composer/Plugin/VendorHardening/Config.php
index b1c79e6e23d3..600da2461778 100644
--- a/composer/Plugin/VendorHardening/Config.php
+++ b/composer/Plugin/VendorHardening/Config.php
@@ -64,7 +64,6 @@ class Config {
     'symfony/browser-kit' => ['Tests'],
     'symfony/console' => ['Tests'],
     'symfony/css-selector' => ['Tests'],
-    'symfony/debug' => ['Tests'],
     'symfony/dependency-injection' => ['Tests'],
     'symfony/dom-crawler' => ['Tests'],
     'symfony/filesystem' => ['Tests'],
@@ -77,7 +76,6 @@ class Config {
     'symfony/psr-http-message-bridge' => ['Tests'],
     'symfony/routing' => ['Tests'],
     'symfony/serializer' => ['Tests'],
-    'symfony/translation' => ['Tests'],
     'symfony/var-dumper' => ['Tests'],
     'symfony/validator' => ['Tests', 'Resources'],
     'symfony/yaml' => ['Tests'],
diff --git a/core/composer.json b/core/composer.json
index 1e3a3ab50771..185fe304e164 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -18,20 +18,19 @@
         "ext-tokenizer": "*",
         "ext-xml": "*",
         "php": ">=8.0.2",
-        "symfony/console": "^4.4",
-        "symfony/dependency-injection": "^4.4",
-        "symfony/event-dispatcher": "^4.4",
-        "symfony/http-foundation": "^4.4.7",
-        "symfony/http-kernel": "^4.4",
+        "symfony/console": "^5.4",
+        "symfony/dependency-injection": "^5.4",
+        "symfony/event-dispatcher": "^5.4",
+        "symfony/http-foundation": "^5.4",
+        "symfony/http-kernel": "^5.4",
         "symfony/mime": "^5.4",
-        "symfony/routing": "^4.4",
-        "symfony/serializer": "^4.4",
-        "symfony/translation": "^4.4",
-        "symfony/validator": "^4.4",
-        "symfony/process": "^4.4",
+        "symfony/routing": "^5.4",
+        "symfony/serializer": "^5.4",
+        "symfony/validator": "^5.4",
+        "symfony/process": "^5.4",
         "symfony/polyfill-iconv": "^1.0",
         "symfony/polyfill-php80": "^1.16",
-        "symfony/yaml": "^4.4.19",
+        "symfony/yaml": "^5.4",
         "typo3/phar-stream-wrapper": "^3.1.3",
         "twig/twig": "^3.0",
         "doctrine/annotations": "^1.12",
diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index 2a28d04e0873..3e12c53beb03 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -6,14 +6,11 @@
  */
 
 use Drupal\Component\Utility\Crypt;
-use Drupal\Core\Http\InputBag;
 use Drupal\Core\Logger\RfcLogLevel;
 use Drupal\Core\Test\TestDatabase;
 use Drupal\Core\Utility\Error;
 use Drupal\Core\StringTranslation\TranslatableMarkup;
 use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\InputBag as SymfonyInputBag;
 
 /**
  * Minimum allowed version of PHP for Drupal to be bootstrapped.
@@ -126,30 +123,6 @@
  */
 define('DRUPAL_ROOT', dirname(__DIR__, 2));
 
-/**
- * Declare class aliases that will be added by the autoloader.
- */
-// @todo https://www.drupal.org/project/drupal/issues/3197482 Remove this class
-//   alias once Drupal is running Symfony 5.3 or higher.
-class_alias('Drupal\Core\Http\KernelEvent', 'Symfony\Component\HttpKernel\Event\KernelEvent', TRUE);
-
-/**
- * Set up the Symfony Request factory for forward compatibility with Symfony 5.
- *
- * @todo Remove this when Symfony 4 is no longer supported.
- */
-Request::setFactory(
-  function ($query, $request, $attributes, $cookies, $files, $server, $content) {
-    $request = new Request($query, $request, $attributes, $cookies, $files, $server, $content);
-    foreach (['request', 'query', 'cookies'] as $bag) {
-      if (!($bag instanceof SymfonyInputBag)) {
-        $request->$bag = new InputBag($request->$bag->all());
-      }
-    }
-    return $request;
-  }
-);
-
 /**
  * Returns and optionally sets the filename for a system resource.
  *
diff --git a/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php b/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php
index 323b8e37f29b..9d6ac424b91d 100644
--- a/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php
+++ b/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php
@@ -3,11 +3,8 @@
 namespace Drupal\Component\EventDispatcher;
 
 use Symfony\Component\DependencyInjection\ContainerInterface;
-use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
-use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
-use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
 
 /**
  * A performance optimized container aware event dispatcher.
@@ -88,39 +85,8 @@ public function __construct(ContainerInterface $container, array $listeners = []
   /**
    * {@inheritdoc}
    */
-  public function dispatch($event/*, string $event_name = NULL*/) {
-    $event_name = 1 < \func_num_args() ? func_get_arg(1) : NULL;
-    if (\is_object($event)) {
-      $class_name = get_class($event);
-      $event_name = $event_name ?? $class_name;
-
-      $deprecation_message = 'Symfony\Component\EventDispatcher\Event is deprecated in drupal:9.1.0 and will be replaced by Symfony\Contracts\EventDispatcher\Event in drupal:10.0.0. A new Drupal\Component\EventDispatcher\Event class is available to bridge the two versions of the class. See https://www.drupal.org/node/3159012';
-
-      // Trigger a deprecation error if the deprecated Event class is used
-      // directly.
-      if ($class_name === 'Symfony\Component\EventDispatcher\Event') {
-        @trigger_error($deprecation_message, E_USER_DEPRECATED);
-      }
-      // Also try to trigger deprecation errors when classes are in the Drupal
-      // namespace and inherit directly from the deprecated class. If a class is
-      // in the Symfony namespace or a different one, we have to assume those
-      // will be updated by the dependency itself. Exclude the Drupal Event
-      // bridge class as a special case, otherwise it's pointless.
-      elseif ($class_name !== 'Drupal\Component\EventDispatcher\Event' && strpos($class_name, 'Drupal') !== FALSE) {
-        if (get_parent_class($event) === 'Symfony\Component\EventDispatcher\Event') {
-          @trigger_error($deprecation_message, E_USER_DEPRECATED);
-        }
-      }
-    }
-    elseif (\is_string($event) && (NULL === $event_name || $event_name instanceof ContractsEvent || $event_name instanceof Event)) {
-      @trigger_error('Calling the Symfony\Component\EventDispatcher\EventDispatcherInterface::dispatch() method with a string event name as the first argument is deprecated in drupal:9.1.0, an Event object will be required instead in drupal:10.0.0. See https://www.drupal.org/node/3154407', E_USER_DEPRECATED);
-      $swap = $event;
-      $event = $event_name ?? new Event();
-      $event_name = $swap;
-    }
-    else {
-      throw new \TypeError(sprintf('Argument 1 passed to "%s::dispatch()" must be an object, %s given.', ContractsEventDispatcherInterface::class, \gettype($event)));
-    }
+  public function dispatch(object $event, ?string $eventName = NULL): object {
+    $event_name = $eventName ?? get_class($event);
 
     if (isset($this->listeners[$event_name])) {
       // Sort listeners if necessary.
diff --git a/core/lib/Drupal/Component/EventDispatcher/Event.php b/core/lib/Drupal/Component/EventDispatcher/Event.php
index 5d6dfe017e39..4586c7358893 100644
--- a/core/lib/Drupal/Component/EventDispatcher/Event.php
+++ b/core/lib/Drupal/Component/EventDispatcher/Event.php
@@ -2,7 +2,7 @@
 
 namespace Drupal\Component\EventDispatcher;
 
-use Symfony\Component\EventDispatcher\Event as SymfonyEvent;
+use Symfony\Contracts\EventDispatcher\Event as SymfonyEvent;
 
 /**
  * Provides a forward-compatibility layer for the Symfony 5 event class.
diff --git a/core/lib/Drupal/Core/Composer/Composer.php b/core/lib/Drupal/Core/Composer/Composer.php
index 9719d6c40ebf..ccd3dc47a86d 100644
--- a/core/lib/Drupal/Core/Composer/Composer.php
+++ b/core/lib/Drupal/Core/Composer/Composer.php
@@ -60,7 +60,6 @@ class Composer {
     'symfony/browser-kit' => ['Tests'],
     'symfony/console' => ['Tests'],
     'symfony/css-selector' => ['Tests'],
-    'symfony/debug' => ['Tests'],
     'symfony/dependency-injection' => ['Tests'],
     'symfony/dom-crawler' => ['Tests'],
     'symfony/filesystem' => ['Tests'],
@@ -74,7 +73,6 @@ class Composer {
     'symfony/psr-http-message-bridge' => ['Tests'],
     'symfony/routing' => ['Tests'],
     'symfony/serializer' => ['Tests'],
-    'symfony/translation' => ['Tests'],
     'symfony/validator' => ['Tests', 'Resources'],
     'symfony/yaml' => ['Tests'],
     'theseer/tokenizer' => ['tests'],
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/DeprecatedServicePass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/DeprecatedServicePass.php
index 92d1d97a68dd..7f1759d8ceac 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/DeprecatedServicePass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/DeprecatedServicePass.php
@@ -20,7 +20,7 @@ public function process(ContainerBuilder $container) {
     foreach ($container->getDefinitions() as $service_id => $definition) {
       if ($definition->isDeprecated()) {
         // @todo: remove when Drupal requires Symfony 5. See
-        // https://www.drupal.org/project/drupal/issues/3197482
+        // https://www.drupal.org/project/drupal/issues/3197729
         if (method_exists($definition, 'getDeprecation')) {
           $deprecated_services[$service_id] = $definition->getDeprecation($service_id)['message'];
         }
@@ -32,7 +32,7 @@ public function process(ContainerBuilder $container) {
     foreach ($container->getAliases() as $service_id => $definition) {
       if ($definition->isDeprecated()) {
         // @todo: remove when Drupal requires Symfony 5. See
-        // https://www.drupal.org/project/drupal/issues/3197482
+        // https://www.drupal.org/project/drupal/issues/3197729
         if (method_exists($definition, 'getDeprecation')) {
           $deprecated_services[$service_id] = $definition->getDeprecation($service_id)['message'];
         }
diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/MimeTypePass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/MimeTypePass.php
index 5daa81a65587..6c0380a310a5 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/MimeTypePass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/MimeTypePass.php
@@ -6,7 +6,6 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Exception\LogicException;
 use Symfony\Component\DependencyInjection\Reference;
-use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface as LegacyMimeTypeGuesserInterface;
 use Symfony\Component\Mime\MimeTypeGuesserInterface;
 
 /**
@@ -29,7 +28,6 @@ public function process(ContainerBuilder $container) {
 
     $tag = 'mime_type_guesser';
     $interface = MimeTypeGuesserInterface::class;
-    $deprecated_interface = LegacyMimeTypeGuesserInterface::class;
 
     // Find all tagged handlers.
     $handlers = [];
@@ -37,10 +35,7 @@ public function process(ContainerBuilder $container) {
       // Validate the interface.
       $handler = $container->getDefinition($id);
       if (!is_subclass_of($handler->getClass(), $interface)) {
-        // Special handling for $deprecated_interface.
-        if (!is_subclass_of($handler->getClass(), $deprecated_interface)) {
-          throw new LogicException("Service '$id' does not implement $interface.");
-        }
+        throw new LogicException("Service '$id' does not implement $interface.");
       }
       $handlers[$id] = $attributes[0]['priority'] ?? 0;
       $interfaces[$id] = $handler->getClass();
@@ -56,12 +51,7 @@ public function process(ContainerBuilder $container) {
     // definition.
     foreach ($handlers as $id => $priority) {
       $arguments = [new Reference($id), $priority];
-      if (is_subclass_of($interfaces[$id], $interface)) {
-        $consumer->addMethodCall('addMimeTypeGuesser', $arguments);
-      }
-      else {
-        $consumer->addMethodCall('addGuesser', $arguments);
-      }
+      $consumer->addMethodCall('addMimeTypeGuesser', $arguments);
     }
   }
 
diff --git a/core/lib/Drupal/Core/DependencyInjection/ContainerBuilder.php b/core/lib/Drupal/Core/DependencyInjection/ContainerBuilder.php
index 5174d3818e81..58dfe6d12f37 100644
--- a/core/lib/Drupal/Core/DependencyInjection/ContainerBuilder.php
+++ b/core/lib/Drupal/Core/DependencyInjection/ContainerBuilder.php
@@ -108,23 +108,6 @@ public function setAlias($alias, $id): Alias {
     return $alias;
   }
 
-  /**
-   * {@inheritdoc}
-   */
-  public function setDefinition($id, Definition $definition): Definition {
-    $definition = parent::setDefinition($id, $definition);
-    // As of Symfony 3.4 all definitions are private by default.
-    // \Symfony\Component\DependencyInjection\Compiler\ResolvePrivatesPassOnly
-    // removes services marked as private from the container even if they are
-    // also marked as public. Drupal requires services that are public to
-    // remain in the container and not be removed.
-    if ($definition->isPublic() && $definition->isPrivate()) {
-      @trigger_error('Not marking service definitions as public is deprecated in drupal:9.2.0 and is required in drupal:10.0.0. Call $definition->setPublic(TRUE) before calling ::setDefinition(). See https://www.drupal.org/node/3194517', E_USER_DEPRECATED);
-      $definition->setPrivate(FALSE);
-    }
-    return $definition;
-  }
-
   /**
    * {@inheritdoc}
    */
diff --git a/core/lib/Drupal/Core/DrupalKernel.php b/core/lib/Drupal/Core/DrupalKernel.php
index d9c18029994a..2eea7f987c64 100644
--- a/core/lib/Drupal/Core/DrupalKernel.php
+++ b/core/lib/Drupal/Core/DrupalKernel.php
@@ -17,7 +17,6 @@
 use Drupal\Core\DependencyInjection\YamlFileLoader;
 use Drupal\Core\Extension\Extension;
 use Drupal\Core\Extension\ExtensionDiscovery;
-use Drupal\Core\File\MimeType\MimeTypeGuesser;
 use Drupal\Core\Http\TrustedHostsRequestFactory;
 use Drupal\Core\Installer\InstallerKernel;
 use Drupal\Core\Installer\InstallerRedirectTrait;
@@ -597,9 +596,6 @@ public function preHandle(Request $request) {
     // Set the allowed protocols.
     UrlHelper::setAllowedProtocols($this->container->getParameter('filter_protocols'));
 
-    // Override of Symfony's MIME type guesser singleton.
-    MimeTypeGuesser::registerWithSymfonyGuesser($this->container);
-
     $this->prepared = TRUE;
   }
 
diff --git a/core/lib/Drupal/Core/File/MimeType/ExtensionMimeTypeGuesser.php b/core/lib/Drupal/Core/File/MimeType/ExtensionMimeTypeGuesser.php
index d8ec40554230..57b7468c1467 100644
--- a/core/lib/Drupal/Core/File/MimeType/ExtensionMimeTypeGuesser.php
+++ b/core/lib/Drupal/Core/File/MimeType/ExtensionMimeTypeGuesser.php
@@ -3,13 +3,12 @@
 namespace Drupal\Core\File\MimeType;
 
 use Drupal\Core\Extension\ModuleHandlerInterface;
-use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface as LegacyMimeTypeGuesserInterface;
 use Symfony\Component\Mime\MimeTypeGuesserInterface;
 
 /**
  * Makes possible to guess the MIME type of a file using its extension.
  */
-class ExtensionMimeTypeGuesser implements MimeTypeGuesserInterface, LegacyMimeTypeGuesserInterface {
+class ExtensionMimeTypeGuesser implements MimeTypeGuesserInterface {
 
   /**
    * Default MIME extension mapping.
diff --git a/core/lib/Drupal/Core/File/MimeType/MimeTypeGuesser.php b/core/lib/Drupal/Core/File/MimeType/MimeTypeGuesser.php
index 90a2c4257e3b..dab20cabfbed 100644
--- a/core/lib/Drupal/Core/File/MimeType/MimeTypeGuesser.php
+++ b/core/lib/Drupal/Core/File/MimeType/MimeTypeGuesser.php
@@ -3,15 +3,12 @@
 namespace Drupal\Core\File\MimeType;
 
 use Drupal\Core\StreamWrapper\StreamWrapperManagerInterface;
-use Symfony\Component\DependencyInjection\ContainerInterface;
-use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser as SymfonyMimeTypeGuesser;
-use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface as LegacyMimeTypeGuesserInterface;
-use Symfony\Component\Mime\MimeTypeGuesserInterface as MimeTypeGuesserInterface;
+use Symfony\Component\Mime\MimeTypeGuesserInterface;
 
 /**
  * Defines a MIME type guesser that also supports stream wrapper paths.
  */
-class MimeTypeGuesser implements LegacyMimeTypeGuesserInterface, MimeTypeGuesserInterface {
+class MimeTypeGuesser implements MimeTypeGuesserInterface {
 
   /**
    * An array of arrays of registered guessers keyed by priority.
@@ -104,29 +101,6 @@ public function addMimeTypeGuesser(MimeTypeGuesserInterface $guesser, $priority
     return $this;
   }
 
-  /**
-   * Appends a MIME type guesser to the guessers chain.
-   *
-   * @param \Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface $guesser
-   *   The guesser to be appended.
-   * @param int $priority
-   *   The priority of the guesser being added.
-   *
-   * @return $this
-   *
-   * @deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Use
-   * ::addMimeTypeGuesser() instead.
-   *
-   * @see https://www.drupal.org/node/3133341
-   */
-  public function addGuesser(LegacyMimeTypeGuesserInterface $guesser, $priority = 0) {
-    @trigger_error(__METHOD__ . ' is deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Use ::addMimeTypeGuesser() instead. See https://www.drupal.org/node/3133341', E_USER_DEPRECATED);
-    $this->guessers[$priority][] = $guesser;
-    // Mark sorted guessers for rebuild.
-    $this->sortedGuessers = NULL;
-    return $this;
-  }
-
   /**
    * {@inheritdoc}
    */
@@ -150,20 +124,4 @@ protected function sortGuessers() {
     return $sorted;
   }
 
-  /**
-   * A helper function to register with Symfony's singleton MIME type guesser.
-   *
-   * Symfony's default mimetype guessers have dependencies on PHP's fileinfo
-   * extension or being able to run the system command file. Drupal's guesser
-   * does not have these dependencies.
-   *
-   * @see \Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser
-   */
-  public static function registerWithSymfonyGuesser(ContainerInterface $container) {
-    // Reset state, so we do not store more and more services during test runs.
-    SymfonyMimeTypeGuesser::reset();
-    $singleton = SymfonyMimeTypeGuesser::getInstance();
-    $singleton->register($container->get('file.mime_type.guesser'));
-  }
-
 }
diff --git a/core/lib/Drupal/Core/Http/KernelEvent.php b/core/lib/Drupal/Core/Http/KernelEvent.php
deleted file mode 100644
index 301f31aab33b..000000000000
--- a/core/lib/Drupal/Core/Http/KernelEvent.php
+++ /dev/null
@@ -1,88 +0,0 @@
-<?php
-
-// @codingStandardsIgnoreFile
-// cspell:disable
-
-namespace Drupal\Core\Http;
-
-use Drupal\Component\EventDispatcher\Event;
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpKernel\HttpKernelInterface;
-
-/**
- * Symfony 6 bridge.
- *
- * This is a copy of Symfony\Component\HttpKernel\Event\KernelEvent
- * with two changes: adding an ::isMainRequest() method for forward
- * compatibility with Symfony 5.3+, and issuing a deprecation message from
- * ::isMasterRequest().
- */
-class KernelEvent extends Event
-{
-    private $kernel;
-    private $request;
-    private $requestType;
-
-    /**
-     * @param int $requestType The request type the kernel is currently processing; one of
-     *                         HttpKernelInterface::MASTER_REQUEST or HttpKernelInterface::SUB_REQUEST
-     */
-    public function __construct(HttpKernelInterface $kernel, Request $request, ?int $requestType)
-    {
-        $this->kernel = $kernel;
-        $this->request = $request;
-        $this->requestType = $requestType;
-    }
-
-    /**
-     * Returns the kernel in which this event was thrown.
-     *
-     * @return HttpKernelInterface
-     */
-    public function getKernel()
-    {
-        return $this->kernel;
-    }
-
-    /**
-     * Returns the request the kernel is currently processing.
-     *
-     * @return Request
-     */
-    public function getRequest()
-    {
-        return $this->request;
-    }
-
-    /**
-     * Returns the request type the kernel is currently processing.
-     *
-     * @return int One of HttpKernelInterface::MASTER_REQUEST and
-     *             HttpKernelInterface::SUB_REQUEST
-     */
-    public function getRequestType()
-    {
-        return $this->requestType;
-    }
-
-    /**
-     * Checks if this is a master request.
-     *
-     * @return bool True if the request is a master request
-     */
-    public function isMasterRequest()
-    {
-        @trigger_error('Symfony\Component\HttpKernel\Event\KernelEvent::isMasterRequest() is deprecated, use isMainRequest()', E_USER_DEPRECATED);
-        return HttpKernelInterface::MASTER_REQUEST === $this->requestType;
-    }
-
-    /**
-     * Checks if this is a main request.
-     *
-     * @return bool True if the request is a main request
-     */
-    public function isMainRequest()
-    {
-        return HttpKernelInterface::MASTER_REQUEST === $this->requestType;
-    }
-}
diff --git a/core/lib/Drupal/Core/Http/RequestStack.php b/core/lib/Drupal/Core/Http/RequestStack.php
index 328550069a08..604c5b3282cd 100644
--- a/core/lib/Drupal/Core/Http/RequestStack.php
+++ b/core/lib/Drupal/Core/Http/RequestStack.php
@@ -30,7 +30,7 @@ public function getMainRequest(): ?Request {
   /**
    * {@inheritdoc}
    */
-  public function getMasterRequest() {
+  public function getMasterRequest(): ?Request {
     @trigger_error('Drupal\Core\Http\RequestStack::getMasterRequest() is deprecated, use getMainRequest() instead.', E_USER_DEPRECATED);
     return $this->getMainRequest();
   }
diff --git a/core/lib/Drupal/Core/Http/TrustedHostsRequestFactory.php b/core/lib/Drupal/Core/Http/TrustedHostsRequestFactory.php
index 7c46418138e4..f1ddd55a7470 100644
--- a/core/lib/Drupal/Core/Http/TrustedHostsRequestFactory.php
+++ b/core/lib/Drupal/Core/Http/TrustedHostsRequestFactory.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\Core\Http;
 
-use Symfony\Component\HttpFoundation\InputBag as SymfonyInputBag;
 use Symfony\Component\HttpFoundation\Request;
 
 /**
@@ -62,17 +61,7 @@ public function createRequest(array $query = [], array $request = [], array $att
     if (empty($server['HTTP_HOST']) || ($server['HTTP_HOST'] === 'localhost' && $this->host !== 'localhost')) {
       $server['HTTP_HOST'] = $this->host;
     }
-    $request = new Request($query, $request, $attributes, $cookies, $files, $server, $content);
-
-    // Replace ParameterBag with InputBag for compatibility with Symfony 5.
-    // @todo Remove this when Symfony 4 is no longer supported.
-    foreach (['request', 'query', 'cookies'] as $bag) {
-      if (!($bag instanceof SymfonyInputBag)) {
-        $request->$bag = new InputBag($request->$bag->all());
-      }
-    }
-
-    return $request;
+    return new Request($query, $request, $attributes, $cookies, $files, $server, $content);
   }
 
 }
diff --git a/core/lib/Drupal/Core/ProxyClass/File/MimeType/ExtensionMimeTypeGuesser.php b/core/lib/Drupal/Core/ProxyClass/File/MimeType/ExtensionMimeTypeGuesser.php
index 760323619893..8cb8b4f59cc8 100644
--- a/core/lib/Drupal/Core/ProxyClass/File/MimeType/ExtensionMimeTypeGuesser.php
+++ b/core/lib/Drupal/Core/ProxyClass/File/MimeType/ExtensionMimeTypeGuesser.php
@@ -12,7 +12,7 @@
      *
      * @see \Drupal\Component\ProxyBuilder
      */
-    class ExtensionMimeTypeGuesser implements \Symfony\Component\Mime\MimeTypeGuesserInterface, \Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface
+    class ExtensionMimeTypeGuesser implements \Symfony\Component\Mime\MimeTypeGuesserInterface
     {
 
         use \Drupal\Core\DependencyInjection\DependencySerializationTrait;
@@ -78,7 +78,7 @@ public function guess($path)
         /**
          * {@inheritdoc}
          */
-        public function guessMimeType($path): string
+        public function guessMimeType($path): ?string
         {
             return $this->lazyLoadItself()->guessMimeType($path);
         }
diff --git a/core/lib/Drupal/Core/ProxyClass/File/MimeType/MimeTypeGuesser.php b/core/lib/Drupal/Core/ProxyClass/File/MimeType/MimeTypeGuesser.php
index ad7f37fda131..1bea10a4c82c 100644
--- a/core/lib/Drupal/Core/ProxyClass/File/MimeType/MimeTypeGuesser.php
+++ b/core/lib/Drupal/Core/ProxyClass/File/MimeType/MimeTypeGuesser.php
@@ -12,7 +12,7 @@
      *
      * @see \Drupal\Component\ProxyBuilder
      */
-    class MimeTypeGuesser implements \Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface, \Symfony\Component\Mime\MimeTypeGuesserInterface
+    class MimeTypeGuesser implements \Symfony\Component\Mime\MimeTypeGuesserInterface
     {
 
         use \Drupal\Core\DependencyInjection\DependencySerializationTrait;
@@ -70,7 +70,7 @@ protected function lazyLoadItself()
         /**
          * {@inheritdoc}
          */
-        public function guessMimeType(string $path): string
+        public function guessMimeType(string $path): ?string
         {
             return $this->lazyLoadItself()->guessMimeType($path);
         }
@@ -86,19 +86,11 @@ public function guess($path)
         /**
          * {@inheritdoc}
          */
-        public function addMimeTypeGuesser($guesser, $priority = 0)
+        public function addMimeTypeGuesser(\Symfony\Component\Mime\MimeTypeGuesserInterface $guesser, $priority = 0)
         {
             return $this->lazyLoadItself()->addMimeTypeGuesser($guesser, $priority);
         }
 
-        /**
-         * {@inheritdoc}
-         */
-        public function addGuesser(\Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface $guesser, $priority = 0)
-        {
-            return $this->lazyLoadItself()->addGuesser($guesser, $priority);
-        }
-
         /**
          * {@inheritdoc}
          */
@@ -107,14 +99,6 @@ public function isGuesserSupported(): bool
             return $this->lazyLoadItself()->isGuesserSupported();
         }
 
-        /**
-         * {@inheritdoc}
-         */
-        public static function registerWithSymfonyGuesser(\Symfony\Component\DependencyInjection\ContainerInterface $container)
-        {
-            \Drupal\Core\File\MimeType\MimeTypeGuesser::registerWithSymfonyGuesser($container);
-        }
-
     }
 
 }
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
index 44fd2bd40704..8918f174e711 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
@@ -437,7 +437,7 @@ public function testGet() {
       $this->assertResourceErrorResponse(403, $this->getExpectedUnauthorizedAccessMessage('GET'), $response, $expected_cacheability->getCacheTags(), $expected_cacheability->getCacheContexts(), 'MISS', FALSE);
     }
     else {
-      $this->assertResourceErrorResponse(404, 'No route found for "GET ' . str_replace($this->baseUrl, '', $this->getEntityResourceUrl()->setAbsolute()->toString()) . '"', $response);
+      $this->assertResourceErrorResponse(404, 'No route found for "GET ' . $this->getEntityResourceUrl()->setAbsolute()->toString() . '"', $response);
     }
 
     $this->provisionEntityResource();
@@ -723,7 +723,7 @@ public function testPost() {
 
     // DX: 404 when resource not provisioned.
     $response = $this->request('POST', $url, $request_options);
-    $this->assertResourceErrorResponse(404, 'No route found for "POST ' . str_replace($this->baseUrl, '', $this->getEntityResourcePostUrl()->setAbsolute()->toString()) . '"', $response);
+    $this->assertResourceErrorResponse(404, 'No route found for "POST ' . $this->getEntityResourcePostUrl()->setAbsolute()->toString() . '"', $response);
 
     $this->provisionEntityResource();
     // Simulate the developer again forgetting the ?_format query string.
@@ -913,10 +913,10 @@ public function testPatch() {
     // DX: 404 when resource not provisioned, 405 if canonical route.
     $response = $this->request('PATCH', $url, $request_options);
     if ($has_canonical_url) {
-      $this->assertResourceErrorResponse(405, 'No route found for "PATCH ' . str_replace($this->baseUrl, '', $this->getEntityResourceUrl()->setAbsolute()->toString()) . '": Method Not Allowed (Allow: GET, POST, HEAD)', $response);
+      $this->assertResourceErrorResponse(405, 'No route found for "PATCH ' . $this->getEntityResourceUrl()->setAbsolute()->toString() . '": Method Not Allowed (Allow: GET, POST, HEAD)', $response);
     }
     else {
-      $this->assertResourceErrorResponse(404, 'No route found for "PATCH ' . str_replace($this->baseUrl, '', $this->getEntityResourceUrl()->setAbsolute()->toString()) . '"', $response);
+      $this->assertResourceErrorResponse(404, 'No route found for "PATCH ' . $this->getEntityResourceUrl()->setAbsolute()->toString() . '"', $response);
     }
 
     $this->provisionEntityResource();
@@ -1140,10 +1140,10 @@ public function testDelete() {
     $response = $this->request('DELETE', $url, $request_options);
     if ($has_canonical_url) {
       $this->assertSame(['GET, POST, HEAD'], $response->getHeader('Allow'));
-      $this->assertResourceErrorResponse(405, 'No route found for "DELETE ' . str_replace($this->baseUrl, '', $this->getEntityResourceUrl()->setAbsolute()->toString()) . '": Method Not Allowed (Allow: GET, POST, HEAD)', $response);
+      $this->assertResourceErrorResponse(405, 'No route found for "DELETE ' . $this->getEntityResourceUrl()->setAbsolute()->toString() . '": Method Not Allowed (Allow: GET, POST, HEAD)', $response);
     }
     else {
-      $this->assertResourceErrorResponse(404, 'No route found for "DELETE ' . str_replace($this->baseUrl, '', $this->getEntityResourceUrl()->setAbsolute()->toString()) . '"', $response);
+      $this->assertResourceErrorResponse(404, 'No route found for "DELETE ' . $this->getEntityResourceUrl()->setAbsolute()->toString() . '"', $response);
     }
 
     $this->provisionEntityResource();
diff --git a/core/modules/user/tests/src/Unit/UserAuthTest.php b/core/modules/user/tests/src/Unit/UserAuthTest.php
index 10526a403927..926d48d4bc26 100644
--- a/core/modules/user/tests/src/Unit/UserAuthTest.php
+++ b/core/modules/user/tests/src/Unit/UserAuthTest.php
@@ -12,6 +12,7 @@
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Session\SessionInterface;
 use Symfony\Component\HttpKernel\Event\ResponseEvent;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
 
 /**
  * @coversDefaultClass \Drupal\user\UserAuth
@@ -257,15 +258,12 @@ public function testAddCheckToUrlForTrustedRedirectResponse(): void {
       ->method('remove')
       ->with('check_logged_in');
 
-    $event_mock = $this->createMock(ResponseEvent::class);
-    $event_mock
-      ->expects($this->once())
-      ->method('getResponse')
-      ->willReturn($response);
-    $event_mock
-      ->expects($this->exactly(3))
-      ->method('getRequest')
-      ->willReturn($request);
+    $event = new ResponseEvent(
+      $this->createMock(HttpKernelInterface::class),
+      $request,
+      HttpKernelInterface::MAIN_REQUEST,
+      $response
+    );
 
     $request
       ->setSession($session_mock);
@@ -275,7 +273,7 @@ public function testAddCheckToUrlForTrustedRedirectResponse(): void {
       ->disableOriginalConstructor()
       ->onlyMethods([])
       ->getMock()
-      ->addCheckToUrl($event_mock);
+      ->addCheckToUrl($event);
 
     $this->assertSame("$frontend_url?check_logged_in=1", $response->getTargetUrl());
   }
diff --git a/core/tests/Drupal/KernelTests/Core/DrupalKernel/DrupalKernelTest.php b/core/tests/Drupal/KernelTests/Core/DrupalKernel/DrupalKernelTest.php
index 29b22bd6072b..7796ce55451d 100644
--- a/core/tests/Drupal/KernelTests/Core/DrupalKernel/DrupalKernelTest.php
+++ b/core/tests/Drupal/KernelTests/Core/DrupalKernel/DrupalKernelTest.php
@@ -9,7 +9,6 @@
 use org\bovigo\vfs\vfsStream;
 use Prophecy\Argument;
 use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpKernel\Event\KernelEvent;
 
 /**
  * Tests DIC compilation to disk.
@@ -59,19 +58,6 @@ protected function getTestKernel(Request $request, array $modules_enabled = NULL
     return $kernel;
   }
 
-  /**
-   * Tests KernelEvent class_alias() override.
-   *
-   * @todo https://www.drupal.org/project/drupal/issues/3197482 Remove this test
-   *   once Drupal is using Symfony 5.3 or higher.
-   */
-  public function testKernelEvent() {
-    $request = Request::createFromGlobals();
-    $kernel = $this->getTestKernel($request);
-    $event = new KernelEvent($kernel, $request, $kernel::MASTER_REQUEST);
-    $this->assertTrue($event->isMainRequest());
-  }
-
   /**
    * Tests DIC compilation.
    */
diff --git a/core/tests/Drupal/KernelTests/Core/File/MimeTypeTest.php b/core/tests/Drupal/KernelTests/Core/File/MimeTypeTest.php
index 15541a42bd1d..50ae3914aacf 100644
--- a/core/tests/Drupal/KernelTests/Core/File/MimeTypeTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/MimeTypeTest.php
@@ -89,19 +89,4 @@ public function testFileMimeTypeDetection() {
     }
   }
 
-  /**
-   * Test deprecations.
-   *
-   * @group legacy
-   */
-  public function testFileMimeTypeDetectionDeprecation() {
-    $this->expectDeprecation('The "Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\MimeTypes" instead.');
-    $this->expectDeprecation('The "Symfony\Component\HttpFoundation\File\MimeType\FileBinaryMimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\FileBinaryMimeTypeGuesser" instead.');
-    $this->expectDeprecation('The "Symfony\Component\HttpFoundation\File\MimeType\FileinfoMimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\FileinfoMimeTypeGuesser" instead.');
-    $this->expectDeprecation('Drupal\Core\File\MimeType\MimeTypeGuesser::guess() is deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Use ::guessMimeType() instead. See https://www.drupal.org/node/3133341');
-    $guesser = $this->container->get('file.mime_type.guesser');
-    $output = $guesser->guess('public://test.jar');
-    $this->assertSame('application/java-archive', $output);
-  }
-
 }
diff --git a/core/tests/Drupal/KernelTests/Core/Routing/ExceptionHandlingTest.php b/core/tests/Drupal/KernelTests/Core/Routing/ExceptionHandlingTest.php
index a0bd58876670..99cc6fd6b35b 100644
--- a/core/tests/Drupal/KernelTests/Core/Routing/ExceptionHandlingTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Routing/ExceptionHandlingTest.php
@@ -74,7 +74,7 @@ public function testJson404() {
 
     $this->assertEquals(Response::HTTP_NOT_FOUND, $response->getStatusCode());
     $this->assertEquals('application/json', $response->headers->get('Content-type'));
-    $this->assertEquals('{"message":"No route found for \\u0022GET \\/not-found\\u0022"}', $response->getContent());
+    $this->assertEquals('{"message":"No route found for \\u0022GET http:\/\/localhost\\/not-found\\u0022"}', $response->getContent());
   }
 
   /**
diff --git a/core/tests/Drupal/KernelTests/Core/TypedData/TypedDataTest.php b/core/tests/Drupal/KernelTests/Core/TypedData/TypedDataTest.php
index a87004ead6bf..91962abc6063 100644
--- a/core/tests/Drupal/KernelTests/Core/TypedData/TypedDataTest.php
+++ b/core/tests/Drupal/KernelTests/Core/TypedData/TypedDataTest.php
@@ -590,7 +590,7 @@ public function testTypedDataValidation() {
     // Test translating violation messages when pluralization is used.
     $definition = DataDefinition::create('string')
       ->setConstraints([
-        'Length' => ['min' => 10, 'allowEmptyString' => FALSE],
+        'Length' => ['min' => 10],
       ]);
     $violations = $this->typedDataManager->create($definition, "short")->validate();
     $this->assertEquals(1, $violations->count());
diff --git a/core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php b/core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
index d8a99cd70430..9050744de070 100644
--- a/core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
+++ b/core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
@@ -8,7 +8,7 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
-use Symfony\Component\EventDispatcher\Event as SymfonyEvent;
+use Symfony\Contracts\EventDispatcher\Event as SymfonyEvent;
 use Symfony\Component\EventDispatcher\GenericEvent;
 use Drupal\Component\EventDispatcher\Event;
 use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
@@ -145,30 +145,6 @@ public function testGetListenersWithServices() {
     $this->assertSame($expectedListeners, $actualListeners);
   }
 
-  /**
-   * Tests argument order deprecation.
-   *
-   * @group legacy
-   */
-  public function testDispatchArgumentOrderDeprecation() {
-    $this->expectDeprecation('Calling the Symfony\Component\EventDispatcher\EventDispatcherInterface::dispatch() method with a string event name as the first argument is deprecated in drupal:9.1.0, an Event object will be required instead in drupal:10.0.0. See https://www.drupal.org/node/3154407');
-    $container = new ContainerBuilder();
-    $dispatcher = new ContainerAwareEventDispatcher($container, []);
-    $dispatcher->dispatch('foo');
-  }
-
-  /**
-   * Tests deprecation notice for Symfony Event class.
-   *
-   * @group legacy
-   */
-  public function testSymfonyEventDeprecation() {
-    $this->expectDeprecation('Symfony\Component\EventDispatcher\Event is deprecated in drupal:9.1.0 and will be replaced by Symfony\Contracts\EventDispatcher\Event in drupal:10.0.0. A new Drupal\Component\EventDispatcher\Event class is available to bridge the two versions of the class. See https://www.drupal.org/node/3159012');
-    $container = new ContainerBuilder();
-    $dispatcher = new ContainerAwareEventDispatcher($container, []);
-    $dispatcher->dispatch(new SymfonyEvent());
-  }
-
   /**
    * Tests dispatching Symfony events with core's event dispatcher.
    */
@@ -178,18 +154,6 @@ public function testSymfonyEventDispatching() {
     $dispatcher->dispatch(new GenericEvent());
   }
 
-  /**
-   * Tests deprecation notice for Symfony Event class inheritance.
-   *
-   * @group legacy
-   */
-  public function testSymfonyInheritedEventDeprecation() {
-    $this->expectDeprecation('Symfony\Component\EventDispatcher\Event is deprecated in drupal:9.1.0 and will be replaced by Symfony\Contracts\EventDispatcher\Event in drupal:10.0.0. A new Drupal\Component\EventDispatcher\Event class is available to bridge the two versions of the class. See https://www.drupal.org/node/3159012');
-    $container = new ContainerBuilder();
-    $dispatcher = new ContainerAwareEventDispatcher($container, []);
-    $dispatcher->dispatch(new SymfonyInheritedEvent());
-  }
-
   public function testDispatchWithServices() {
     $container = new ContainerBuilder();
     $container->register('listener_service', TestEventListener::class);
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/MimeTypePassTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/MimeTypePassTest.php
deleted file mode 100644
index a92b5a1e2c4a..000000000000
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/MimeTypePassTest.php
+++ /dev/null
@@ -1,68 +0,0 @@
-<?php
-
-namespace Drupal\Tests\Core\DependencyInjection\Compiler;
-
-use Drupal\Core\DependencyInjection\Compiler\MimeTypePass;
-use Drupal\Tests\UnitTestCase;
-use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface as LegacyMimeTypeGuesserInterface;
-use Symfony\Component\Mime\MimeTypeGuesserInterface;
-use Drupal\Core\File\MimeType\MimeTypeGuesser;
-
-/**
- * @coversDefaultClass \Drupal\Core\DependencyInjection\Compiler\MimeTypePass
- * @group DependencyInjection
- * @group legacy
- * @runInSeparateProcess
- */
-class MimeTypePassTest extends UnitTestCase {
-
-  protected function buildContainer($environment = 'dev') {
-    $container = new ContainerBuilder();
-    $container->setParameter('kernel.environment', $environment);
-    return $container;
-  }
-
-  /**
-   * Tests backwards compatibility shim for MimeTypeGuesser interface changes.
-   */
-  public function testProcessLegacy() {
-    $this->expectDeprecation('The "Drupal\Tests\Core\DependencyInjection\Compiler\LegacyMimeTypeGuesser" class implements "Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface" that is deprecated since Symfony 4.3, use {@link MimeTypesInterface} instead.');
-    $container = $this->buildContainer();
-    $container
-      ->register('file.mime_type.guesser', MimeTypeGuesser::class);
-
-    $container
-      ->register('handler1', __NAMESPACE__ . '\NewMimeTypeGuesser')
-      ->addTag('mime_type_guesser', ['priority' => 200]);
-    $container
-      ->register('handler2', __NAMESPACE__ . '\LegacyMimeTypeGuesser')
-      ->addTag('mime_type_guesser', ['priority' => 100]);
-
-    $handler_pass = new MimeTypePass();
-    $handler_pass->process($container);
-    $method_calls = $container->getDefinition('file.mime_type.guesser')->getMethodCalls();
-    $this->assertCount(2, $method_calls);
-    $this->assertSame(200, $method_calls[0][1][1]);
-    $this->assertSame(100, $method_calls[1][1][1]);
-  }
-
-}
-
-class NewMimeTypeGuesser implements MimeTypeGuesserInterface {
-
-  public function guessMimeType(string $string): string {
-    return '';
-  }
-
-  public function isGuesserSupported(): bool {
-    return TRUE;
-  }
-
-}
-
-class LegacyMimeTypeGuesser implements LegacyMimeTypeGuesserInterface {
-
-  public function guess($string) {}
-
-}
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerBuilderTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerBuilderTest.php
index f8b82e2fb782..bff672f3a7e3 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerBuilderTest.php
@@ -92,20 +92,6 @@ public function testSetDefinition() {
     $this->assertFalse($service->isPublic());
   }
 
-  /**
-   * @covers ::setDefinition
-   *
-   * @group legacy
-   */
-  public function testLegacySetDefinition() {
-    // Test a service with public set to default.
-    $container = new ContainerBuilder();
-    $definition = new Definition();
-    $this->expectDeprecation('Not marking service definitions as public is deprecated in drupal:9.2.0 and is required in drupal:10.0.0. Call $definition->setPublic(TRUE) before calling ::setDefinition(). See https://www.drupal.org/node/3194517');
-    $service = $container->setDefinition('foo', $definition);
-    $this->assertTrue($service->isPublic());
-  }
-
   /**
    * @covers ::setAlias
    */
diff --git a/core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelLegacyTest.php b/core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelLegacyTest.php
index adca11d80544..9afef566f4fa 100644
--- a/core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelLegacyTest.php
+++ b/core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelLegacyTest.php
@@ -23,7 +23,7 @@ public function testKernelEventDeprecation() {
     $request = $this->createMock(Request::class);
     $event = new KernelEvent($kernel, $request, $kernel::MASTER_REQUEST);
 
-    $this->expectDeprecation('Symfony\Component\HttpKernel\Event\KernelEvent::isMasterRequest() is deprecated, use isMainRequest()');
+    $this->expectDeprecation('Since symfony/http-kernel 5.3: "Symfony\Component\HttpKernel\Event\KernelEvent::isMasterRequest()" is deprecated, use "isMainRequest()" instead.');
     $this->assertTrue($event->isMasterRequest());
   }
 
diff --git a/core/tests/Drupal/Tests/Core/File/MimeTypeGuesserTest.php b/core/tests/Drupal/Tests/Core/File/MimeTypeGuesserTest.php
deleted file mode 100644
index b7222892d8bc..000000000000
--- a/core/tests/Drupal/Tests/Core/File/MimeTypeGuesserTest.php
+++ /dev/null
@@ -1,54 +0,0 @@
-<?php
-
-namespace Drupal\Tests\Core\File;
-
-use Drupal\Core\DependencyInjection\ContainerBuilder;
-use Drupal\Core\File\MimeType\MimeTypeGuesser;
-use Drupal\Core\StreamWrapper\StreamWrapperManager;
-use Drupal\Tests\UnitTestCase;
-use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser as SymfonyMimeTypeGuesser;
-
-/**
- * @coversDefaultClass \Drupal\Core\File\MimeType\MimeTypeGuesser
- * @group DrupalKernel
- */
-class MimeTypeGuesserTest extends UnitTestCase {
-
-  /**
-   * @covers ::registerWithSymfonyGuesser
-   *
-   * @see Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser
-   */
-  public function testSymfonyGuesserRegistration() {
-    // Make the guessers property accessible on Symfony's MimeTypeGuesser.
-    $symfony_guesser = SymfonyMimeTypeGuesser::getInstance();
-    // Test that the Drupal mime type guess is not being used before the
-    // override method is called. It is possible that the test environment does
-    // not support the default guessers.
-    $reflected_guessers = new \ReflectionProperty($symfony_guesser, 'guessers');
-    $reflected_guessers->setAccessible(TRUE);
-    $guessers = $reflected_guessers->getValue($symfony_guesser);
-    if (count($guessers)) {
-      $this->assertNotInstanceOf('Drupal\Core\File\MimeType\MimeTypeGuesser', $guessers[0]);
-    }
-    $container = new ContainerBuilder();
-    $container->set('file.mime_type.guesser', new MimeTypeGuesser(new StreamWrapperManager()));
-    MimeTypeGuesser::registerWithSymfonyGuesser($container);
-    $symfony_guesser = SymfonyMimeTypeGuesser::getInstance();
-    $guessers = $reflected_guessers->getValue($symfony_guesser);
-    $this->assertSame($container->get('file.mime_type.guesser'), $guessers[0]);
-    $this->assertInstanceOf('Drupal\Core\File\MimeType\MimeTypeGuesser', $guessers[0]);
-    $count = count($guessers);
-
-    $container = new ContainerBuilder();
-    $container->set('file.mime_type.guesser', new MimeTypeGuesser(new StreamWrapperManager()));
-    MimeTypeGuesser::registerWithSymfonyGuesser($container);
-    $symfony_guesser = SymfonyMimeTypeGuesser::getInstance();
-    $guessers = $reflected_guessers->getValue($symfony_guesser);
-    $this->assertSame($container->get('file.mime_type.guesser'), $guessers[0]);
-    $this->assertInstanceOf('Drupal\Core\File\MimeType\MimeTypeGuesser', $guessers[0]);
-    $new_count = count($guessers);
-    $this->assertEquals($count, $new_count, 'The count of mime type guessers remains the same after container re-init.');
-  }
-
-}
diff --git a/core/tests/Drupal/Tests/Core/Http/InputBagTest.php b/core/tests/Drupal/Tests/Core/Http/InputBagTest.php
index f2120e4afe5f..43b24db1298c 100644
--- a/core/tests/Drupal/Tests/Core/Http/InputBagTest.php
+++ b/core/tests/Drupal/Tests/Core/Http/InputBagTest.php
@@ -4,7 +4,6 @@
 
 use Drupal\Core\Http\InputBag;
 use Drupal\Tests\UnitTestCase;
-use Symfony\Component\HttpFoundation\Request;
 
 /**
  * @coversDefaultClass \Drupal\Core\Http\InputBag
@@ -29,13 +28,4 @@ public function testAll() {
     $input_bag->all('bad');
   }
 
-  /**
-   * @coversNothing
-   * @todo Remove this when Symfony 4 is no longer supported.
-   */
-  public function testRequestFactory() {
-    $request = Request::create('');
-    $this->assertInstanceOf(InputBag::class, $request->query);
-  }
-
 }
diff --git a/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php b/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php
index 8c0369f912a1..3637e2a75d3b 100644
--- a/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php
+++ b/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php
@@ -69,7 +69,6 @@ public static function isDeprecationSkipped($message) {
       return TRUE;
     }
     $dynamic_skipped_deprecations = [
-      '%The "[^"]+" class extends "Symfony\\\\Component\\\\EventDispatcher\\\\Event" that is deprecated since Symfony 4\.3, use "Symfony\\\\Contracts\\\\EventDispatcher\\\\Event" instead\.$%',
       '%The "Symfony\\\\Component\\\\Validator\\\\Context\\\\ExecutionContextInterface::.*\(\)" method is considered internal Used by the validator engine\. Should not be called by user\W+code\. It may change without further notice\. You should not extend it from "[^"]+".%',
       '%The "PHPUnit\\\\Framework\\\\TestCase::addWarning\(\)" method is considered internal%',
       // The following deprecations were not added as part of the original
@@ -84,8 +83,6 @@ public static function isDeprecationSkipped($message) {
       // Skip DebugClassLoader false positives.
       '%Method "[^"]+" might add "[^"]+" as a native return type declaration in the future. Do the same in (child class|implementation) "(?!Drupal\\\\)[^"]+" now to avoid errors or add an explicit @return annotation to suppress this message%',
       '%The "Drupal\\\\[^"]+" method will require a new "[^"]+" argument in the next major version of its interface "Drupal\\\\[^"]+", not defining it is deprecated%',
-      // Symfony 5.4
-      '%Method "Symfony\\\\Component\\\\Serializer\\\\Normalizer\\\\NormalizerInterface::normalize\(\)" might add "array\|string\|int\|float\|bool\|\\\\ArrayObject\|null" as a native return type declaration in the future. Do the same in implementation "(?!Drupal\\\\)[^"]+" now to avoid errors or add an explicit @return annotation to suppress this message.%',
     ];
     return (bool) preg_filter($dynamic_skipped_deprecations, '$0', $message);
   }
@@ -111,16 +108,6 @@ public static function getSkippedDeprecations() {
       // The following deprecation messages are skipped for testing purposes.
       '\Drupal\Tests\SkippedDeprecationTest deprecation',
       'Return type of PhpDeprecation::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice',
-      // The following Symfony deprecations are introduced in the Symfony 4
-      // development cycle. They will need to be resolved prior to Symfony 5
-      // compatibility.
-      'The "Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\MimeTypes" instead.',
-      'The "Drupal\Core\File\MimeType\MimeTypeGuesser" class implements "Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface" that is deprecated since Symfony 4.3, use {@link MimeTypesInterface} instead.',
-      'The "Symfony\Component\HttpFoundation\File\MimeType\FileBinaryMimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\FileBinaryMimeTypeGuesser" instead.',
-      'The "Symfony\Component\HttpFoundation\File\MimeType\FileinfoMimeTypeGuesser" class is deprecated since Symfony 4.3, use "Symfony\Component\Mime\FileinfoMimeTypeGuesser" instead.',
-      'The "Drupal\Tests\Core\DependencyInjection\Compiler\LegacyMimeTypeGuesser" class implements "Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface" that is deprecated since Symfony 4.3, use {@link MimeTypesInterface} instead.',
-      'The "Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher::dispatch()" method will require a new "string|null $eventName" argument in the next major version of its interface "Symfony\Contracts\EventDispatcher\EventDispatcherInterface", not defining it is deprecated.',
-      'The "Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher::dispatch()" method will require a new "string|null $eventName" argument in the next major version of its parent class "Symfony\Contracts\EventDispatcher\EventDispatcherInterface", not defining it is deprecated.',
       // The following deprecation is listed for Twig 2 compatibility when unit
       // testing using \Symfony\Component\ErrorHandler\DebugClassLoader.
       'The "Twig\Environment::getTemplateClass()" method is considered internal. It may change without further notice. You should not extend it from "Drupal\Core\Template\TwigEnvironment".',
-- 
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