Merge branch '6.4' into 7.0

* 6.4:
  Fix implicitly-required parameters
  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
  [Messenger][AmazonSqs] Allow async-aws/sqs version 2

Author: nicolas-grekas

MessageBirdTransport.php

@@ -31,7 +31,7 @@ final class MessageBirdTransport extends AbstractTransport
     private string $token;
     private string $from;
 
-    public function __construct(#[\SensitiveParameter] string $token, string $from, HttpClientInterface $client = null, EventDispatcherInterface $dispatcher = null)
+    public function __construct(#[\SensitiveParameter] string $token, string $from, ?HttpClientInterface $client = null, ?EventDispatcherInterface $dispatcher = null)
     {
         $this->token = $token;
         $this->from = $from;

Tests/MessageBirdTransportTest.php

@@ -22,7 +22,7 @@
 
 final class MessageBirdTransportTest extends TransportTestCase
 {
-    public static function createTransport(HttpClientInterface $client = null): MessageBirdTransport
+    public static function createTransport(?HttpClientInterface $client = null): MessageBirdTransport
     {
         return new MessageBirdTransport('token', 'from', $client ?? new MockHttpClient());
     }