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

Matcher/Dumper/CompiledUrlMatcherDumper.php

@@ -244,7 +244,7 @@ private function compileStaticRoutes(array $staticRoutes, array &$conditions): a
      * Last but not least:
      *  - Because it is not possibe to mix unicode/non-unicode patterns in a single regexp, several of them can be generated.
      *  - The same regexp can be used several times when the logic in the switch rejects the match. When this happens, the
-     *    matching-but-failing subpattern is blacklisted by replacing its name by "(*F)", which forces a failure-to-match.
+     *    matching-but-failing subpattern is excluded by replacing its name by "(*F)", which forces a failure-to-match.
      *    To ease this backlisting operation, the name of subpatterns is also the string offset where the replacement should occur.
      */
     private function compileDynamicRoutes(RouteCollection $collection, bool $matchHost, int $chunkLimit, array &$conditions): array