message: Add backstage.io/github-actions-id to metadata
diff: @@ -5,7 +5,8 @@ metadata:
  description: |
  Backstage is an open-source developer portal that puts the developer experience first.
  annotations:
  - github.com/project-slug: 'spotify/backstage'
  + github.com/project-slug: spotify/backstage
  + backstage.io/github-actions-id: spotify/backstage
  spec:
  type: library
  owner: Spotify
  