ci: scope down permissions for stale-bot.yml

Author: AdnaneKhan

.github/workflows/stale-bot.yml

@@ -16,6 +16,10 @@ on:
   schedule:
     - cron: '0 20 * * SUN' # every Sunday at 20 am UTC: PST 0:00 AM "
 
+permissions:
+  issues: write
+  pull-requests: write
+
 jobs:
   stale-close:
     runs-on: ubuntu-22.04