Update rubocop requirement from ~> 0.80.1 to ~> 1.11.0

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@v0.80.1...v1.11.0)

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

Gemfile

@@ -7,7 +7,7 @@ gem 'berkshelf'
 group :style do
   gem 'foodcritic', '~> 16.2.0'
   gem 'rake', '~> 13.0.1'
-  gem 'rubocop', '~> 0.80.1'
+  gem 'rubocop', '~> 1.11.0'
 end
 
 group :test do