Bump govuk-frontend from 3.14.0 to 4.7.0

Bumps [govuk-frontend](https://github.com/alphagov/govuk-frontend) from 3.14.0 to 4.7.0.
- [Release notes](https://github.com/alphagov/govuk-frontend/releases)
- [Changelog](https://github.com/alphagov/govuk-frontend/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk-frontend@v3.14.0...v4.7.0)

---
updated-dependencies:
- dependency-name: govuk-frontend
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -58,7 +58,7 @@
     "datatables.net-dt": "^1.11.3",
     "elm-pep": "^1.0.6",
     "geojson": "0.5.0",
-    "govuk-frontend": "^3.14.0",
+    "govuk-frontend": "^4.7.0",
     "hapi-rate-limit": "5.0.1",
     "jquery": "^3.6.0",
     "lodash.isequal": "^4.5.0",