Merge branch '5.4' into 6.0

* 5.4:
  Fix tests
  CS fix
  CS fix
  CS fix
  CS fixes
  Bump Symfony version to 5.3.4
  Update VERSION for 5.3.3
  Update CHANGELOG for 5.3.3
  Bump Symfony version to 5.2.12
  Update VERSION for 5.2.11
  Update CHANGELOG for 5.2.11
  Bump Symfony version to 4.4.27
  Update VERSION for 4.4.26
  Update CONTRIBUTORS for 4.4.26
  Update CHANGELOG for 4.4.26

Author: nicolas-grekas

Transport/BeanstalkdReceiver.php

@@ -27,7 +27,7 @@ class BeanstalkdReceiver implements ReceiverInterface, MessageCountAwareInterfac
     private $connection;
     private $serializer;
 
-    public function __construct(Connection $connection, ?SerializerInterface $serializer = null)
+    public function __construct(Connection $connection, SerializerInterface $serializer = null)
     {
         $this->connection = $connection;
         $this->serializer = $serializer ?? new PhpSerializer();

Transport/BeanstalkdSender.php

@@ -25,7 +25,7 @@ class BeanstalkdSender implements SenderInterface
     private $connection;
     private $serializer;
 
-    public function __construct(Connection $connection, ?SerializerInterface $serializer = null)
+    public function __construct(Connection $connection, SerializerInterface $serializer = null)
     {
         $this->connection = $connection;
         $this->serializer = $serializer ?? new PhpSerializer();

Transport/BeanstalkdTransport.php

@@ -27,7 +27,7 @@ class BeanstalkdTransport implements TransportInterface, MessageCountAwareInterf
     private $receiver;
     private $sender;
 
-    public function __construct(Connection $connection, ?SerializerInterface $serializer = null)
+    public function __construct(Connection $connection, SerializerInterface $serializer = null)
     {
         $this->connection = $connection;
         $this->serializer = $serializer ?? new PhpSerializer();