build(deps): bump kitchen-dokken from 2.20.5 to 2.20.6

Bumps [kitchen-dokken](https://github.com/test-kitchen/kitchen-dokken) from 2.20.5 to 2.20.6.
- [Release notes](https://github.com/test-kitchen/kitchen-dokken/releases)
- [Changelog](https://github.com/test-kitchen/kitchen-dokken/blob/main/CHANGELOG.md)
- [Commits](https://github.com/test-kitchen/kitchen-dokken/compare/v2.20.5...v2.20.6)

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

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