Bump kitchen-dokken from 2.14.0 to 2.15.0

Bump kitchen-dokken from 2.14.0 to 2.15.0

Bumps [kitchen-dokken](https://github.com/someara/kitchen-dokken) from 2.14.0 to 2.15.0.
- [Release notes](https://github.com/someara/kitchen-dokken/releases)
- [Changelog](https://github.com/test-kitchen/kitchen-dokken/blob/master/CHANGELOG.md)
- [Commits](https://github.com/someara/kitchen-dokken/compare/v2.14.0...v2.15.0)

---
updated-dependencies:
- dependency-name: kitchen-dokken
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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