Fix Symfony 5.1 deprecation

Since symfony/http-foundation 5.1: The "Symfony\Component\HttpFoundation\Response::create()" method is deprecated, use "new Symfony\Component\HttpFoundation\Response()" instead.

src/JsonRequestTransformerListener.php

@@ -37,7 +37,7 @@ public function onKernelRequest(RequestEvent $event): void
         }
 
         if (!$this->transformJsonBody($request)) {
-            $response = Response::create('Unable to parse request.', Response::HTTP_BAD_REQUEST);
+            $response = new Response('Unable to parse request.', Response::HTTP_BAD_REQUEST);
             $event->setResponse($response);
         }
     }