⬆️👷 Bump actions/stale from 8 to 9

Bumps [actions/stale](https://github.com/actions/stale) from 8 to 9.
- [Release notes](https://github.com/actions/stale/releases)
- [Changelog](https://github.com/actions/stale/blob/main/CHANGELOG.md)
- [Commits](actions/stale@v8...v9)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/stale.yml

@@ -7,7 +7,7 @@ jobs:
  stale:
  runs-on: ubuntu-latest
  steps:
- - uses: actions/stale@v8
+ - uses: actions/stale@v9
  with:
  stale-issue-message: >-
  This issue is stale because it has been open for more than 14 days with no activity.