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

@@ -18,6 +18,7 @@
     "require": {
         "php": ">=7.2.5",
         "psr/log": "~1.0",
+        "symfony/deprecation-contracts": "^2.1",
         "symfony/polyfill-php80": "^1.15"
     },
     "require-dev": {