Update rubocop-govuk requirement from = 4.16.0 to = 4.16.1

Updates the requirements on [rubocop-govuk](https://github.com/alphagov/rubocop-govuk) to permit the latest version.
- [Changelog](https://github.com/alphagov/rubocop-govuk/blob/main/CHANGELOG.md)
- [Commits](alphagov/rubocop-govuk@v4.16.0...v4.16.1)

---
updated-dependencies:
- dependency-name: rubocop-govuk
  dependency-type: direct:development
...

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

govuk_message_queue_consumer.gemspec

@@ -22,6 +22,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency "pry-byebug"
   s.add_development_dependency "rake"
   s.add_development_dependency "rspec", "~> 3.11"
-  s.add_development_dependency "rubocop-govuk", "4.16.0"
+  s.add_development_dependency "rubocop-govuk", "4.16.1"
   s.add_development_dependency "yard"
 end