Bump warden from 1.2.8 to 1.2.9 (#14738)

Bumps [warden](https://github.com/hassox/warden) from 1.2.8 to 1.2.9.
- [Release notes](https://github.com/hassox/warden/releases)
- [Changelog](https://github.com/wardencommunity/warden/blob/master/CHANGELOG.md)
- [Commits](https://github.com/hassox/warden/compare/v1.2.8...v1.2.9

)

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