Merge branch '5.1'

* 5.1: (28 commits)
  [DI] fix
  Use "composer/package-versions-deprecated" when possible
  Fix
  Small update in our internal terminology
  Fix support for PHP8 union types
  [VarDumper] fix typo
  [Lock][Messenger] Fix precedence of DSN options for 5.1
  Fix support for PHP8 union types
  [FrameworkBundle] preserve dots in query-string when redirecting
  [3.4] Fix support for PHP8 union types
  [PhpUnitBridge] Streamline ansi/no-ansi of composer according to phpunit --colors option
  [3.4] Small update in our internal terminology
  [Cache] fix compat with DBAL v3
  Remove unnecessary null check
  [HttpFoundation] Allow `null` in InputBag@set
  [HttpClient] Convert CurlHttpClient::handlePush() to instance method
  Fix package rename when releasing
  bumped Symfony version to 5.1.3
  updated VERSION for 5.1.2
  updated CHANGELOG for 5.1.2
  ...

Author: nicolas-grekas

Exception/UnsupportedSchemeException.php

@@ -50,9 +50,9 @@ class UnsupportedSchemeException extends LogicException
             'class' => Bridge\Firebase\FirebaseTransportFactory::class,
             'package' => 'symfony/firebase-notifier',
         ],
-        'freemobile' => [
+        'free-mobile' => [
             'class' => Bridge\FreeMobile\FreeMobileTransportFactory::class,
-            'package' => 'symfony/freemobile-notifier',
+            'package' => 'symfony/free-mobile-notifier',
         ],
         'ovhcloud' => [
             'class' => Bridge\OvhCloud\OvhCloudTransportFactory::class,