Update doc site deployment action

Author: bmonkman

.github/workflows/doc-site.yml

@@ -46,7 +46,11 @@ jobs:
     name: Deploy
     runs-on: ubuntu-latest
     needs: build
-
+    # These permissions are needed to interact with GitHub's OIDC Token endpoint.
+    permissions:
+      id-token: write
+      contents: read
+      
     steps:
     # Once github action supports nested composite actions (anything `uses` is a composite action)
     # Therefore we cannot reuse the code as a separate composite action until it supports it,