Bump rubocop-govuk from 3.5.0 to 4.10.0

- [Changelog](https://github.com/alphagov/rubocop-govuk)

Author: lfdebrux

govuk_tech_docs.gemspec

@@ -50,5 +50,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "jasmine", "~> 3.5.0"
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "rspec", "~> 3.9.0"
-  spec.add_development_dependency "rubocop-govuk", "~> 3.5.0"
+  spec.add_development_dependency "rubocop-govuk", "~> 4.10.0"
 end