Bump actions/stale from 5.2.0 to 8.0.0 (#293)

Bumps [actions/stale](https://github.com/actions/stale) from 5.2.0 to 8.0.0.
- [Release notes](https://github.com/actions/stale/releases)
- [Changelog](https://github.com/actions/stale/blob/main/CHANGELOG.md)
- [Commits](actions/stale@v5.2.0...v8.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/stale.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Close Stale Issues
-      uses: actions/stale@v5.2.0
+      uses: actions/stale@v8.0.0
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-pr-message: |