build(deps): bump the frontend group across 1 directory with 2 updates

Bumps the frontend group with 2 updates in the / directory: [ccs-frontend](https://github.com/Crown-Commercial-Service/ccs-frontend-project) and [govuk-frontend](https://github.com/alphagov/govuk-frontend/tree/HEAD/packages/govuk-frontend).


Updates `ccs-frontend` from 2.5.0 to 3.1.0
- [Commits](https://github.com/Crown-Commercial-Service/ccs-frontend-project/commits)

Updates `govuk-frontend` from 5.14.0 to 6.1.0
- [Release notes](https://github.com/alphagov/govuk-frontend/releases)
- [Changelog](https://github.com/alphagov/govuk-frontend/blob/main/CHANGELOG.md)
- [Commits](https://github.com/alphagov/govuk-frontend/commits/v6.1.0/packages/govuk-frontend)

---
updated-dependencies:
- dependency-name: ccs-frontend
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: frontend
- dependency-name: govuk-frontend
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: frontend
...

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

Author: dependabot[bot]

bun.lock

@@ -8,8 +8,8 @@
     "@types/node": "^25.5.0",
     "@types/rails__request.js": "^0.0.1",
     "accessible-autocomplete": "^3.0.1",
-    "ccs-frontend": "^2.5.0",
-    "govuk-frontend": "^5.14.0",
+    "ccs-frontend": "^3.1.0",
+    "govuk-frontend": "^6.1.0",
     "jquery": "^4.0.0",
     "js-cookie": "^3.0.5",
     "sass": "^1.98.0",