Merge pull request #74 from rubygems/dependabot/bundler/rubocop-tw-1.66

Update rubocop requirement from ~> 0.57 to ~> 1.66

Author: hsbt

Gemfile

@@ -12,7 +12,7 @@ group :test do
   gem 'backports'
   gem 'coveralls'
   gem 'rspec', '>= 3.1.0'
-  gem 'rubocop', '~> 0.57'
+  gem 'rubocop', '~> 1.66'
   gem 'simplecov', '>= 0.9'
   gem 'webmock'
   gem 'rexml'