Bump sidekiq-unique-jobs from 7.1.19 to 7.1.21 (#18085)

Bump sidekiq-unique-jobs from 7.1.19 to 7.1.21 (#18085)

Bumps [sidekiq-unique-jobs](https://github.com/mhenrixon/sidekiq-unique-jobs) from 7.1.19 to 7.1.21.
- [Release notes](https://github.com/mhenrixon/sidekiq-unique-jobs/releases)
- [Changelog](https://github.com/mhenrixon/sidekiq-unique-jobs/blob/main/CHANGELOG.md)
- [Commits](https://github.com/mhenrixon/sidekiq-unique-jobs/compare/v7.1.19...v7.1.21)

---
updated-dependencies:
- dependency-name: sidekiq-unique-jobs
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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