Update rubocop requirement from 1.60.0 to 1.60.1

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@v1.60.0...v1.60.1)

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

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

Gemfile

@@ -78,7 +78,7 @@ group :test do
 end
 
 group :ci do
-  gem 'rubocop', '1.60.0', require: false
+  gem 'rubocop', '1.60.1', require: false
   gem 'rubocop-performance', '1.20.2', require: false
   gem 'rubocop-rails', '2.23.1', require: false
   gem 'rubocop-rspec', '2.26.1', require: false