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

Author: nicolas-grekas

Tests/ZendeskTransportTest.php

@@ -21,7 +21,7 @@
 
 final class ZendeskTransportTest extends TransportTestCase
 {
- public static function createTransport(HttpClientInterface $client = null): ZendeskTransport
+ public static function createTransport(?HttpClientInterface $client = null): ZendeskTransport
  {
  return (new ZendeskTransport('testEmail', 'testToken', $client ?? new MockHttpClient()))->setHost('test.zendesk.com');
  }

ZendeskOptions.php

@@ -20,7 +20,7 @@ final class ZendeskOptions implements MessageOptionsInterface
 {
  private ?string $priority;
 
- public function __construct(string $priority = null)
+ public function __construct(?string $priority = null)
  {
  $this->priority = $priority;
  }

ZendeskTransport.php

@@ -29,7 +29,7 @@ final class ZendeskTransport extends AbstractTransport
  private string $email;
  private string $token;
 
- public function __construct(string $email, #[\SensitiveParameter] string $token, HttpClientInterface $client = null, EventDispatcherInterface $dispatcher = null)
+ public function __construct(string $email, #[\SensitiveParameter] string $token, ?HttpClientInterface $client = null, ?EventDispatcherInterface $dispatcher = null)
  {
  parent::__construct($client, $dispatcher);
 
@@ -47,7 +47,7 @@ public function supports(MessageInterface $message): bool
  return $message instanceof ChatMessage && (null === $message->getOptions() || $message->getOptions() instanceof ZendeskOptions);
  }
 
- protected function doSend(MessageInterface $message = null): SentMessage
+ protected function doSend(?MessageInterface $message = null): SentMessage
  {
  if (!$message instanceof ChatMessage) {
  throw new UnsupportedMessageTypeException(__CLASS__, ChatMessage::class, $message);