Set php-cs-fixer minimal version to version with 8.1 support

Author: andrew-demb

composer.json

@@ -17,7 +17,7 @@
         "symfony/http-kernel": "^5.3 || ^6.0"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^3.3",
+        "friendsofphp/php-cs-fixer": "^3.4",
         "matthiasnoback/symfony-dependency-injection-test": "^4.2",
         "phpro/grumphp-shim": "^1.6.0",
         "phpspec/prophecy-phpunit": "^2.0",