Build(deps-dev): bump dunamai from 1.21.1 to 1.21.2

Bumps [dunamai](https://github.com/mtkennerly/dunamai) from 1.21.1 to 1.21.2.
- [Release notes](https://github.com/mtkennerly/dunamai/releases)
- [Changelog](https://github.com/mtkennerly/dunamai/blob/master/CHANGELOG.md)
- [Commits](mtkennerly/dunamai@v1.21.1...v1.21.2)

---
updated-dependencies:
- dependency-name: dunamai
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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