Bump rubocop-govuk from 5.1.18 to 5.1.20

Bumps [rubocop-govuk](https://github.com/alphagov/rubocop-govuk) from 5.1.18 to 5.1.20.
- [Changelog](https://github.com/alphagov/rubocop-govuk/blob/main/CHANGELOG.md)
- [Commits](alphagov/rubocop-govuk@v5.1.18...v5.1.20)

---
updated-dependencies:
- dependency-name: rubocop-govuk
  dependency-version: 5.1.20
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -245,7 +245,7 @@ GEM
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     jmespath (1.6.2)
-    json (2.13.0)
+    json (2.13.2)
     jwt (2.8.2)
       base64
     language_server-protocol (3.17.0.5)
@@ -302,7 +302,7 @@ GEM
     ostruct (0.6.3)
     pagy (9.3.4)
     parallel (1.27.0)
-    parser (3.3.8.0)
+    parser (3.3.9.0)
       ast (~> 2.4.1)
       racc
     pg (1.6.1)
@@ -380,7 +380,7 @@ GEM
     redis-session-store (0.11.6)
       actionpack (>= 5.2.4.1, < 9)
       redis (>= 3, < 6)
-    regexp_parser (2.10.0)
+    regexp_parser (2.11.2)
     reline (0.6.2)
       io-console (~> 0.5)
     request_store (1.5.1)
@@ -403,15 +403,15 @@ GEM
       rspec-mocks (~> 3.13)
       rspec-support (~> 3.13)
     rspec-support (3.13.4)
-    rubocop (1.78.0)
+    rubocop (1.79.2)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.1.0)
       parallel (~> 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 2.9.3, < 3.0)
-      rubocop-ast (>= 1.45.1, < 2.0)
+      rubocop-ast (>= 1.46.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 4.0)
     rubocop-ast (1.46.0)
@@ -420,14 +420,14 @@ GEM
     rubocop-capybara (2.22.1)
       lint_roller (~> 1.1)
       rubocop (~> 1.72, >= 1.72.1)
-    rubocop-govuk (5.1.18)
-      rubocop (= 1.78.0)
+    rubocop-govuk (5.1.20)
+      rubocop (= 1.79.2)
       rubocop-ast (= 1.46.0)
       rubocop-capybara (= 2.22.1)
-      rubocop-rails (= 2.32.0)
+      rubocop-rails (= 2.33.3)
       rubocop-rake (= 0.7.1)
       rubocop-rspec (= 3.6.0)
-    rubocop-rails (2.32.0)
+    rubocop-rails (2.33.3)
       activesupport (>= 4.2.0)
       lint_roller (~> 1.1)
       rack (>= 1.1)
@@ -478,7 +478,7 @@ GEM
     tzinfo-data (1.2025.2)
       tzinfo (>= 1.0.0)
     uk_postcode (2.1.8)
-    unicode-display_width (3.1.4)
+    unicode-display_width (3.1.5)
       unicode-emoji (~> 4.0, >= 4.0.4)
     unicode-emoji (4.0.4)
     uri (1.0.3)