gci: Add permission to publish to gh-pages to docs workflow

.github/workflows/docs-action.yml

@@ -11,6 +11,9 @@ on:
 
 jobs:
   build:
+    permission:
+      pages: write      # to deploy to Pages
+      id-token: write   # to verify the deployment originates from an appropriate source
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Github repo