Bump actions/stale from 8.0.0 to 9.0.0

Bumps [actions/stale](https://github.com/actions/stale) from 8.0.0 to 9.0.0.
- [Release notes](https://github.com/actions/stale/releases)
- [Changelog](https://github.com/actions/stale/blob/main/CHANGELOG.md)
- [Commits](actions/stale@v8.0.0...v9.0.0)

---
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.yaml

@@ -9,7 +9,7 @@ jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v8.0.0
+      - uses: actions/stale@v9.0.0
         id: stale
         with:
           # Overall configuration