[Frontend] fix migration to enable frontendbundle in bundles.php

src/CoreShop/Bundle/CoreBundle/Migrations/Version20241018060845.php

@@ -94,7 +94,7 @@ private function buildContents(array $bundles): string
 
     private function load(string $file): array
     {
-        $bundles = file_exists($file) ? (require_once $file) : [];
+        $bundles = file_exists($file) ? (require $file) : [];
         if (!\is_array($bundles)) {
             $bundles = [];
         }