Bump rubocop-govuk from 5.0.7 to 5.0.8

Bumps [rubocop-govuk](https://github.com/alphagov/rubocop-govuk) from 5.0.7 to 5.0.8.
- [Changelog](https://github.com/alphagov/rubocop-govuk/blob/main/CHANGELOG.md)
- [Commits](alphagov/rubocop-govuk@v5.0.7...v5.0.8)

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

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

Gemfile.lock

@@ -286,7 +286,7 @@ GEM
       mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     httpclient (2.8.3)
-    i18n (1.14.6)
+    i18n (1.14.7)
       concurrent-ruby (~> 1.0)
     imagen (0.2.0)
       parser (>= 2.5, != 2.5.1.1)
@@ -396,7 +396,7 @@ GEM
     parallel (1.26.3)
     parallel_tests (4.9.0)
       parallel
-    parser (3.3.6.0)
+    parser (3.3.7.0)
       ast (~> 2.4.1)
       racc
     pg (1.5.9)
@@ -530,7 +530,7 @@ GEM
       rspec-mocks (~> 3.13)
       rspec-support (~> 3.13)
     rspec-support (3.13.1)
-    rubocop (1.69.2)
+    rubocop (1.70.0)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
@@ -544,8 +544,8 @@ GEM
       parser (>= 3.3.1.0)
     rubocop-capybara (2.21.0)
       rubocop (~> 1.41)
-    rubocop-govuk (5.0.7)
-      rubocop (= 1.69.2)
+    rubocop-govuk (5.0.8)
+      rubocop (= 1.70.0)
       rubocop-ast (= 1.37.0)
       rubocop-capybara (= 2.21.0)
       rubocop-rails (= 2.28.0)