chore: add file to github action

Author: Laure-di

.github/labeler.yml

@@ -117,3 +117,8 @@ webhosting:
   - changed-files:
       - any-glob-to-any-file:
           - internal/services/webhosting/**
+file:
+  - changed-files:
+      - any-glob-to-any-file:
+          - internal/services/file/**
+

.github/workflows/acceptance-tests.yaml

@@ -19,6 +19,7 @@ jobs:
           - cockpit
           - container
           - domain
+          - file
           - flexibleip
           - function
           - iam