Fix stale action permissions

Action write permissions is required to update the cache (see actions/stale#1133)

.github/workflows/stale.yml

@@ -8,6 +8,7 @@ jobs:
  runs-on: ubuntu-latest
  permissions:
  issues: write
+ actions: write
  steps:
  - uses: actions/stale@v9
  with:
@@ -22,4 +23,4 @@ jobs:
  only-labels: "pending user feedback"
  exempt-issue-labels: "bug,enhancement,good first issue,backend enhancement,backend issue,backup corruption,bounty,bugreport attached,core logic,docker,filters,help wanted,linux,localization,MacOS,mono,performance issue,reproduced,server side,ssl/tls issue,Synology,tests,translation,UI,windows"
  repo-token: ${{ secrets.GITHUB_TOKEN }}
- operations-per-run: 60
+ operations-per-run: 500