Switch symfony 5.4

Controller/ControllerTrait.php

@@ -51,7 +51,7 @@ use Symfony\Component\Security\Core\Security;
 
 trait ControllerTrait
 {
-    public static function getSubscribedServices()
+    public static function getSubscribedServices() :array
     {
         return array_merge(
                 parent::getSubscribedServices(),