Fix: GetResponseEvent deprecation

- GetResponseEvent is deprecated since Symfony 4.3, use RequestEvent instead

Author: Zowac

core/form-data.md

@@ -19,7 +19,7 @@ namespace App\EventListener;
 
 use ApiPlatform\Core\Util\RequestAttributesExtractor;
 use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpKernel\Event\GetResponseEvent;
+use Symfony\Component\HttpKernel\Event\RequestEvent;
 use ApiPlatform\Core\EventListener\DeserializeListener as DecoratedListener;
 use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
 use ApiPlatform\Core\Serializer\SerializerContextBuilderInterface;
@@ -37,7 +37,7 @@ final class DeserializeListener
         $this->decorated = $decorated;
     }
 
-    public function onKernelRequest(GetResponseEvent $event): void {
+    public function onKernelRequest(RequestEvent $event): void {
         $request = $event->getRequest();
         if ($request->isMethodCacheable(false) || $request->isMethod(Request::METHOD_DELETE)) {
             return;