build(deps-dev): bump knip from 5.50.2 to 5.51.0 in /frontend

Bumps [knip](https://github.com/webpro-nl/knip/tree/HEAD/packages/knip) from 5.50.2 to 5.51.0.
- [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/5.51.0/packages/knip)

---
updated-dependencies:
- dependency-name: knip
  dependency-version: 5.51.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

frontend/package-lock.json

@@ -69,7 +69,7 @@
     "graphql": "^16.10.0",
     "happy-dom": "^17.4.4",
     "i18next-parser": "^9.3.0",
-    "knip": "^5.50.2",
+    "knip": "^5.51.0",
     "msw": "^2.7.4",
     "msw-storybook-addon": "^2.0.4",
     "postcss": "^8.5.3",