Merge branch '5.2' into 5.x

* 5.2:
  [Notifier] Improve tests (5.1)
  [DoctrineBridge] Guess correct form types for DATE_IMMUTABLE and DATETIME_IMMUTABLE
  [Notifier] Fix wrong package name
  [Notifier] Fix wrong package names
  Add missing symfony/deprecation-contracts requirement
  [Notifier] [Free Mobile] Could not use custom host in DSN
  Add missing symfony/deprecation-contracts requirement

Author: derrabus

composer.json

@@ -21,6 +21,7 @@
         "symfony/cache": "^5.2",
         "symfony/config": "^5.0",
         "symfony/dependency-injection": "^5.2",
+        "symfony/deprecation-contracts": "^2.1",
         "symfony/event-dispatcher": "^5.1",
         "symfony/error-handler": "^4.4.1|^5.0.1",
         "symfony/http-foundation": "^5.2.1",