Bump govuk-frontend from 4.7.0 to 5.1.0

Bumps [govuk-frontend](https://github.com/alphagov/govuk-frontend) from 4.7.0 to 5.1.0.
- [Release notes](https://github.com/alphagov/govuk-frontend/releases)
- [Changelog](https://github.com/alphagov/govuk-frontend/blob/main/CHANGELOG.md)
- [Commits](alphagov/govuk-frontend@v4.7.0...v5.1.0)

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

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

package.json

@@ -3,7 +3,7 @@
   "private": "true",
   "dependencies": {
     "esbuild": "^0.20.0",
-    "govuk-frontend": "4.7.0",
+    "govuk-frontend": "5.1.0",
     "sass": "^1.70.0",
     "puppeteer": "21.10.0"
   },

yarn.lock

@@ -534,10 +534,10 @@ glob-parent@~5.1.2:
   dependencies:
     is-glob "^4.0.1"
 
-govuk-frontend@4.7.0:
-  version "4.7.0"
-  resolved "https://registry.yarnpkg.com/govuk-frontend/-/govuk-frontend-4.7.0.tgz#69950b6c2e69f435ffe9aa60d8dee232dac977de"
-  integrity sha512-0OsdCusF5qvLWwKziU8zqxiC0nq6WP0ZQuw51ymZ/1V0tO71oIKMlSLN2S9bm8RcEGSoidPt2A34gKxePrLjvg==
+govuk-frontend@5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/govuk-frontend/-/govuk-frontend-5.1.0.tgz#55e520940b587ddd023e96251efaa076acc9bd5f"
+  integrity sha512-Dc3J+uOI4i2VR3BVyfxbf6qVjTT4n4bBqbD0/Io6feP8pt/4IfKdP1vWimZf+BwMKKMXacw10hmdy5UcD6Cr8w==
 
 graceful-fs@^4.1.6, graceful-fs@^4.2.0:
   version "4.2.11"