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

Tests/phpt/hello.php

@@ -1,8 +1,5 @@
 <?php
 
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
-
 require __DIR__.'/autoload.php';
 
 return function (array $context): void {