Bump rubocop-govuk from 5.1.5 to 5.1.6

Bumps [rubocop-govuk](https://github.com/alphagov/rubocop-govuk) from 5.1.5 to 5.1.6.
- [Changelog](https://github.com/alphagov/rubocop-govuk/blob/main/CHANGELOG.md)
- [Commits](alphagov/rubocop-govuk@v5.1.5...v5.1.6)

---
updated-dependencies:
- dependency-name: rubocop-govuk
  dependency-version: 5.1.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -103,7 +103,7 @@ GEM
       rspec (>= 2.14, < 4)
     coderay (1.1.3)
     concurrent-ruby (1.3.5)
-    connection_pool (2.5.2)
+    connection_pool (2.5.3)
     crack (1.0.0)
       bigdecimal
       rexml
@@ -230,7 +230,7 @@ GEM
       pp (>= 0.6.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
-    json (2.10.2)
+    json (2.11.3)
     json-schema (5.1.1)
       addressable (~> 2.8)
       bigdecimal (~> 3.1)
@@ -651,7 +651,7 @@ GEM
       rspec-mocks (~> 3.13)
       rspec-support (~> 3.13)
     rspec-support (3.13.2)
-    rubocop (1.75.3)
+    rubocop (1.75.4)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.1.0)
@@ -668,8 +668,8 @@ GEM
     rubocop-capybara (2.22.1)
       lint_roller (~> 1.1)
       rubocop (~> 1.72, >= 1.72.1)
-    rubocop-govuk (5.1.5)
-      rubocop (= 1.75.3)
+    rubocop-govuk (5.1.6)
+      rubocop (= 1.75.4)
       rubocop-ast (= 1.44.1)
       rubocop-capybara (= 2.22.1)
       rubocop-rails (= 2.31.0)