Bump rubocop-govuk from 4.0.0 to 4.1.0

Bumps [rubocop-govuk](https://github.com/alphagov/rubocop-govuk) from 4.0.0 to 4.1.0.
- [Release notes](https://github.com/alphagov/rubocop-govuk/releases)
- [Changelog](https://github.com/alphagov/rubocop-govuk/blob/main/CHANGELOG.md)
- [Commits](alphagov/rubocop-govuk@v4.0.0...v4.1.0)

---
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

@@ -225,8 +225,8 @@ GEM
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
     null_logger (0.0.1)
-    parallel (1.20.1)
-    parser (3.0.1.1)
+    parallel (1.21.0)
+    parser (3.0.2.0)
       ast (~> 2.4.1)
     phantomjs (2.1.1.0)
     plek (4.0.0)
@@ -291,30 +291,30 @@ GEM
     rexml (3.2.5)
     robotex (1.0.0)
     rouge (3.26.0)
-    rubocop (1.15.0)
+    rubocop (1.21.0)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml
-      rubocop-ast (>= 1.5.0, < 2.0)
+      rubocop-ast (>= 1.9.1, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.6.0)
+    rubocop-ast (1.11.0)
       parser (>= 3.0.1.1)
-    rubocop-govuk (4.0.0)
-      rubocop (~> 1.15.0)
-      rubocop-ast (~> 1.6.0)
-      rubocop-rails (~> 2.10.0)
-      rubocop-rake (= 0.5.1)
-      rubocop-rspec (~> 2.3.0)
-    rubocop-rails (2.10.1)
+    rubocop-govuk (4.1.0)
+      rubocop (= 1.21.0)
+      rubocop-ast (= 1.11.0)
+      rubocop-rails (= 2.12.2)
+      rubocop-rake (= 0.6.0)
+      rubocop-rspec (= 2.4.0)
+    rubocop-rails (2.12.2)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 1.7.0, < 2.0)
-    rubocop-rake (0.5.1)
-      rubocop
-    rubocop-rspec (2.3.0)
+    rubocop-rake (0.6.0)
+      rubocop (~> 1.0)
+    rubocop-rspec (2.4.0)
       rubocop (~> 1.0)
       rubocop-ast (>= 1.1.0)
     ruby-progressbar (1.11.0)
@@ -374,7 +374,7 @@ GEM
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.7)
-    unicode-display_width (2.0.0)
+    unicode-display_width (2.1.0)
     unicorn (5.8.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)