ci(github-actions): Set correct permissions (issues.yml)

Author: d3xter666

.github/workflows/issues.yml

@@ -3,6 +3,9 @@ on:
   schedule:
     - cron: '00 20 * * *'
 
+permissions:
+  contents: read
+  pull-requests: write
 jobs:
   stale:
     name: Flag and close stale issues