build(deps-dev): bump knip from 5.64.2 to 5.66.4 in /frontend

Bumps [knip](https://github.com/webpro-nl/knip/tree/HEAD/packages/knip) from 5.64.2 to 5.66.4.
- [Release notes](https://github.com/webpro-nl/knip/releases)
- [Changelog](https://github.com/webpro-nl/knip/blob/main/packages/knip/.release-it.json)
- [Commits](https://github.com/webpro-nl/knip/commits/5.66.4/packages/knip)

---
updated-dependencies:
- dependency-name: knip
  dependency-version: 5.66.4
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]