chore: bump actions/stale from 5.0.0 to 6.0.0 (#4289)

Bumps [actions/stale](https://github.com/actions/stale) from 5.0.0 to 6.0.0.
- [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/v5.0.0...v6.0.0)

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

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

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

.github/workflows/stale.yaml

@@ -13,7 +13,7 @@ jobs:
     steps:
       # v5.1.0 has a weird bug that makes stalebot add then remove its own label
       # https://github.com/actions/stale/pull/775
-      - uses: actions/stale@v5.0.0
+      - uses: actions/stale@v6.0.0
         with:
           stale-issue-label: stale
           stale-pr-label: stale