Update rubocop requirement from ~> 1.29.1 to ~> 1.30.0

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@v1.29.1...v1.30.0)

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

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

business.gemspec

@@ -23,6 +23,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "gc_ruboconfig", "~> 3.2.0"
   spec.add_development_dependency "rspec", "~> 3.1"
   spec.add_development_dependency "rspec_junit_formatter", "~> 0.5.1"
-  spec.add_development_dependency "rubocop", "~> 1.29.1"
+  spec.add_development_dependency "rubocop", "~> 1.30.0"
   spec.metadata["rubygems_mfa_required"] = "true"
 end