Bump rubocop-rails from 2.0.1 to 2.2.0 (#11257)

Bumps [rubocop-rails](https://github.com/rubocop-hq/rubocop-rails) from 2.0.1 to 2.2.0.
- [Release notes](https://github.com/rubocop-hq/rubocop-rails/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop-rails/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop-rails/compare/v2.0.1...v2.2.0)

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

Gemfile

@@ -132,7 +132,7 @@ group :development do
   gem 'letter_opener_web', '~> 1.3'
   gem 'memory_profiler'
   gem 'rubocop', '~> 0.72', require: false
-  gem 'rubocop-rails', '~> 2.0', require: false
+  gem 'rubocop-rails', '~> 2.2', require: false
   gem 'brakeman', '~> 4.5', require: false
   gem 'bundler-audit', '~> 0.6', require: false