chore(deps): bump knip from 6.7.0 to 6.9.0 (#505)

Bumps [knip](https://github.com/webpro-nl/knip/tree/HEAD/packages/knip) from 6.7.0 to 6.9.0.
- [Release notes](https://github.com/webpro-nl/knip/releases)
- [Commits](https://github.com/webpro-nl/knip/commits/knip@6.9.0/packages/knip)

---
updated-dependencies:
- dependency-name: knip
  dependency-version: 6.9.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]