add silent response documentation

UPGRADE-5.0.md

@@ -14,4 +14,4 @@ Since Laravel 9+ requires PHP 8.1, this PHP version is also required in this lib
 
 ### Patches
 
-- The cache directory now points to the "/storage/cache" directory. 
+- The cache directory now points to the "/storage/cache" directory.

docs/response-factory.md

@@ -58,4 +58,31 @@ You do not always want to hand over a status code of 200 to the frontend. You ca
             return $this->responseFactory->create($myDataObjectWithSerializerAnnotations);
         }
     }
+```
+
+## Using quiet response
+
+Q: What is a silent response?
+A: Quite simply, it is a normal Laravel response that contains the 204 status code. The 204 HTTP code does not represent any content, but it was successful.
+
+You dont't need to add the 204 status code yourself, when you call the `createQuietResponse` method, it will be set automatically.
+
+```php
+<?php
+declare(strict_types=1);
+
+namespace App\Http\Controller;
+
+use Dropelikeit\LaravelJmsSerializer\Http\Responses\ResponseFactory;
+use Symfony\Component\HttpFoundation\JsonResponse;
+
+final class ExampleController extends Controller 
+{
+    public function __construct(private ResponseFactory $responseFactory) {}
+
+    public function myAction(): JsonResponse
+    {
+        return $this->responseFactory->createQuietResponse();
+    }
+}
 ```