Bump rubocop-govuk from 4.15.0 to 4.16.0

Bumps [rubocop-govuk](https://github.com/alphagov/rubocop-govuk) from 4.15.0 to 4.16.0.
- [Changelog](https://github.com/alphagov/rubocop-govuk/blob/main/CHANGELOG.md)
- [Commits](alphagov/rubocop-govuk@v4.15.0...v4.16.0)

---
updated-dependencies:
- dependency-name: rubocop-govuk
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -402,13 +402,13 @@ GEM
       rubocop (~> 1.41)
     rubocop-factory_bot (2.25.1)
       rubocop (~> 1.41)
-    rubocop-govuk (4.15.0)
+    rubocop-govuk (4.16.0)
       rubocop (= 1.62.1)
       rubocop-ast (= 1.31.2)
-      rubocop-rails (= 2.24.0)
+      rubocop-rails (= 2.24.1)
       rubocop-rake (= 0.6.0)
       rubocop-rspec (= 2.27.1)
-    rubocop-rails (2.24.0)
+    rubocop-rails (2.24.1)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 1.33.0, < 2.0)