ci: scope down permissions for pull_latest_docs.yml

Author: AdnaneKhan

.github/workflows/pull_latest_docs.yml

@@ -9,6 +9,10 @@ on:
   # Allow workflow to be triggered manually.
   workflow_dispatch:
 
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   sync:
     name: Sync docs