Bump knip from 5.61.3 to 5.66.0 in /web-app

Bumps [knip](https://github.com/webpro-nl/knip/tree/HEAD/packages/knip) from 5.61.3 to 5.66.0.
- [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/5.66.0/packages/knip)

---
updated-dependencies:
- dependency-name: knip
  dependency-version: 5.66.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

web-app/package.json

@@ -79,7 +79,7 @@
     "@types/webpack-env": "^1.18.5",
     "babel-plugin-istanbul": "^7.0.1",
     "customize-cra": "^1.0.0",
-    "knip": "^5.27.2",
+    "knip": "^5.66.0",
     "minio": "^8.0.6",
     "nyc": "^15.1.0",
     "prettier": "3.3.3",