Update rubocop requirement from ~> 1.65.0 to ~> 1.66.1

Updates the requirements on [rubocop](https://github.com/rubocop/rubocop) to permit the latest version.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.65.0...v1.66.1)

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

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

cloudflare-rails.gemspec

@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake', '~> 13.2.1'
   spec.add_development_dependency 'rspec', '~> 3.13.0'
   spec.add_development_dependency 'rspec-rails', '~> 7.0.1'
-  spec.add_development_dependency 'rubocop', '~> 1.65.0'
+  spec.add_development_dependency 'rubocop', '~> 1.66.1'
   spec.add_development_dependency 'rubocop-performance', '~> 1.21.0'
   spec.add_development_dependency 'rubocop-rails', '~> 2.25.0'
   spec.add_development_dependency 'rubocop-rspec', '~> 3.0.1'