rebase: bump actions/stale from 3 to 5

Bumps [actions/stale](https://github.com/actions/stale) from 3 to 5.
- [Release notes](https://github.com/actions/stale/releases)
- [Changelog](https://github.com/actions/stale/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/stale/compare/v3...v5)

---
updated-dependencies:
- dependency-name: actions/stale
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/stale.yaml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-18.04
     if: github.repository == 'ceph/ceph-csi'
     steps:
-      - uses: actions/stale@v3
+      - uses: actions/stale@v5
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           days-before-issue-stale: 30