Bumps actions/stale](https://github.com/actions/stale)) from 4 to 6. - 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/v4...v6))

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

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