Merge branch '6.3' into 6.4

* 6.3:
  [FrameworkBundle] Fixed parsing new JSON output of debug:config not possible
  [DependencyInjection] Skip errored definitions deep-referenced as runtime exceptions
  [AssetMapper] Allow DirectoryResource for cache
  [PhpUnitBridge] Require PHPUnit 9.6 by default
  [WebProfilerBundle] Fix the accessibility of some background color
  [HttpKernel] Nullable and default value arguments in RequestPayloadValueResolver
  [WebProfilerBundle] right blocks: fix display
  [Messenger] Preserve existing Doctrine schema
  [Serializer] Refactor tests to not extends ObjectNormalizer
  [HttpFoundation] Make Request::getPayload() return an empty InputBag if request body is empty
  [HttpClient] Explicitly exclude CURLOPT_POSTREDIR
  [FrameworkBundle] Fix setting decorated services during tests

Author: nicolas-grekas

CurlHttpClient.php

@@ -462,6 +462,7 @@ private function validateExtraCurlOptions(array $options): void
             \CURLOPT_TIMEOUT_MS => 'max_duration',
             \CURLOPT_TIMEOUT => 'max_duration',
             \CURLOPT_MAXREDIRS => 'max_redirects',
+            \CURLOPT_POSTREDIR => 'max_redirects',
             \CURLOPT_PROXY => 'proxy',
             \CURLOPT_NOPROXY => 'no_proxy',
             \CURLOPT_SSL_VERIFYPEER => 'verify_peer',