Issue #3055189 by mikelutz, catch, alexpott: [Symfony 5] Support for mapping...

Issue #3055189 by mikelutz, catch, alexpott: [Symfony 5] Support for mapping keys in multi-line blocks is deprecated since Symfony 4.3 and will throw a ParseException in 5.0

core/assets/scaffold/files/default.services.yml

@@ -126,15 +126,13 @@ parameters:
   # Not recommended in production environments
   # @default false
   http.response.debug_cacheability_headers: false
-  factory.keyvalue:
-    {}
+  factory.keyvalue: {}
     # Default key/value storage service to use.
     # @default keyvalue.database
     # default: keyvalue.database
     # Collection-specific overrides.
     # state: keyvalue.database
-  factory.keyvalue.expirable:
-    {}
+  factory.keyvalue.expirable: {}
     # Default key/value expirable storage service to use.
     # @default keyvalue.database.expirable
     # default: keyvalue.database.expirable

core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php

@@ -145,7 +145,6 @@ public static function getSkippedDeprecations() {
       // The following Symfony deprecations are introduced in the Symfony 4
       // development cycle. They will need to be resolved prior to Symfony 5
       // compatibility.
-      'Support for mapping keys in multi-line blocks is deprecated since Symfony 4.3 and will throw a ParseException in 5.0.',
       '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.',

sites/default/default.services.yml

@@ -126,15 +126,13 @@ parameters:
   # Not recommended in production environments
   # @default false
   http.response.debug_cacheability_headers: false
-  factory.keyvalue:
-    {}
+  factory.keyvalue: {}
     # Default key/value storage service to use.
     # @default keyvalue.database
     # default: keyvalue.database
     # Collection-specific overrides.
     # state: keyvalue.database
-  factory.keyvalue.expirable:
-    {}
+  factory.keyvalue.expirable: {}
     # Default key/value expirable storage service to use.
     # @default keyvalue.database.expirable
     # default: keyvalue.database.expirable