Issue #3414272: Show deprecations in gitlab pipeline tests

Closes #3414272

.gitlab-ci.yml

@@ -52,11 +52,19 @@ include:
 variables:
   OPT_IN_TEST_PREVIOUS_MAJOR: 1
   OPT_IN_TEST_PREVIOUS_MINOR: 1
-  OPT_IN_TEST_NEXT_MINOR: 0
+  OPT_IN_TEST_NEXT_MINOR: 1
   OPT_IN_TEST_NEXT_MAJOR: 0
   OPT_IN_TEST_MAX_PHP: 0
-  # concurrent=1 uses run-tests.sh, 0 uses phpunit directly.
+  # _PHPUNIT_CONCURRENT=1 uses run-tests.sh, 0 uses phpunit directly.
   _PHPUNIT_CONCURRENT: 1
+  # Skip (1) or execute (0) the following jobs.
+  SKIP_COMPOSER: 0
+  SKIP_COMPOSER_LINT: 0
+  SKIP_ESLINT: 0
+  SKIP_STYLELINT: 0
+  SKIP_PHPCS: 0
+  SKIP_PHPSTAN: 0
+  SKIP_PHPUNIT: 0
 
 eslint:
   before_script:
@@ -89,6 +97,15 @@ phpcs:
       cd $CI_PROJECT_DIR
     fi
 
+# Patch core file. This will be added to all phpunit jobs.
 phpunit:
   before_script:
     - *module-filter-core-patches
+
+# For the 'next minor' core test show deprecations, and set allow_failure:true
+# so the jobs ends with an amber warning not red error.
+phpunit (next minor):
+  allow_failure: true
+  variables:
+    # Use core ignoreFile to show deprecations. This will only work with $_PHPUNIT_CONCURRENT=1
+    SYMFONY_DEPRECATIONS_HELPER: "ignoreFile=$CI_PROJECT_DIR/$_WEB_ROOT/core/.deprecation-ignore.txt"