ci(gh-pages): add missing permission for gh-pages deployment

Author: FabianWilms

.github/workflows/build.yaml

@@ -61,8 +61,7 @@ jobs:
     needs: build
     # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
     permissions:
-      pages: write      # to deploy to Pages
-      id-token: write   # to verify the deployment originates from an appropriate source
+      contents: write
     # Deploy to the github-pages environment
     environment:
       name: github-pages