Merge branch '6.3' into 6.4

* 6.3:
  minor #53524 [Messenger] [AmazonSqs] Allow `async-aws/sqs` version 2 (smoench)
  Fix bad merge
  List CS fix in .git-blame-ignore-revs
  Fix implicitly-required parameters
  List CS fix in .git-blame-ignore-revs
  Apply php-cs-fixer fix --rules nullable_type_declaration_for_default_null_value

LazyProxy/PhpDumper/ProxyDumper.php

@@ -41,7 +41,7 @@ public function __construct(string $salt = '')
         $this->classGenerator = new BaseGeneratorStrategy();
     }
 
-    public function isProxyCandidate(Definition $definition, bool &$asGhostObject = null, string $id = null): bool
+    public function isProxyCandidate(Definition $definition, ?bool &$asGhostObject = null, ?string $id = null): bool
     {
         $asGhostObject = false;
 
@@ -76,7 +76,7 @@ static function (&\$wrappedInstance, \ProxyManager\Proxy\LazyLoadingInterface \$
 EOF;
     }
 
-    public function getProxyCode(Definition $definition, string $id = null): string
+    public function getProxyCode(Definition $definition, ?string $id = null): string
     {
         $code = $this->classGenerator->generate($this->generateProxyClass($definition));
         $code = preg_replace('/^(class [^ ]++ extends )([^\\\\])/', '$1\\\\$2', $code);