fix(docs): api docs for bulk env update response (#7714)

app/Http/Controllers/Api/ApplicationsController.php

@@ -2696,10 +2696,8 @@ class ApplicationsController extends Controller
                     new OA\MediaType(
                         mediaType: 'application/json',
                         schema: new OA\Schema(
-                            type: 'object',
-                            properties: [
-                                'message' => ['type' => 'string', 'example' => 'Environment variables updated.'],
-                            ]
+                            type: 'array',
+                            items: new OA\Items(ref: '#/components/schemas/EnvironmentVariable')
                         )
                     ),
                 ]