chore: cleanup, update project dependencies

src/Controller/Api/NewsletterSubscriptionController.php

@@ -96,6 +96,9 @@ class NewsletterSubscriptionController extends AbstractController
         ], $extra), Response::HTTP_BAD_REQUEST);
     }
 
+    /**
+     * @return array<string, mixed>
+     */
     private function responsePayload(NewsletterSubscriptionRequestResult $result): array
     {
         return [