[FrameworkBundle][Controller] Use interface from Contracts to remove deprecation warnings

Author: tomtomau

Controller/AbstractController.php

@@ -15,7 +15,6 @@
 use Psr\Container\ContainerInterface;
 use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
 use Symfony\Component\DependencyInjection\ParameterBag\ContainerBagInterface;
-use Symfony\Component\DependencyInjection\ServiceSubscriberInterface;
 use Symfony\Component\Form\FormFactoryInterface;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\HttpFoundation\Session\SessionInterface;
@@ -27,6 +26,7 @@
 use Symfony\Component\Security\Csrf\CsrfTokenManagerInterface;
 use Symfony\Component\Serializer\SerializerInterface;
 use Symfony\Component\Templating\EngineInterface;
+use Symfony\Contracts\Service\ServiceSubscriberInterface;
 use Twig\Environment;
 
 /**