Merge branch '5.2' into 5.3

* 5.2:
  CS fix
  CS fix
  CS fixes
  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

Internal/AmpClientState.php

@@ -149,7 +149,7 @@ private function getClient(array $options): array
             public $uri;
             public $handle;
 
-            public function connect(string $uri, ?ConnectContext $context = null, ?CancellationToken $token = null): Promise
+            public function connect(string $uri, ConnectContext $context = null, CancellationToken $token = null): Promise
             {
                 $result = $this->connector->connect($this->uri ?? $uri, $context, $token);
                 $result->onResolve(function ($e, $socket) {