chore(deps): bump dessant/lock-threads from 5 to 6 (#4864)

Bumps [dessant/lock-threads](https://github.com/dessant/lock-threads) from 5 to 6.
- [Release notes](https://github.com/dessant/lock-threads/releases)
- [Changelog](https://github.com/dessant/lock-threads/blob/main/CHANGELOG.md)
- [Commits](https://github.com/dessant/lock-threads/compare/v5...v6)

---
updated-dependencies:
- dependency-name: dessant/lock-threads
  dependency-version: '6'
  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>
Co-authored-by: Daniel Gibbs <me@danielgibbs.co.uk>

.github/workflows/lock.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Lock Threads
-        uses: dessant/lock-threads@v5
+        uses: dessant/lock-threads@v6
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           issue-comment: >