Bump actions/stale from 7.0.0 to 8.0.0

Bumps [actions/stale](https://github.com/actions/stale) from 7.0.0 to 8.0.0.
- [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/v7.0.0...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>

.github/workflows/issues-cron.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/stale@v7.0.0
+      - uses: actions/stale@v8.0.0
         with:
           close-issue-label: closed-issue-activity
           close-pr-label: closed-pr-activity