chore(deps): update rubocop-config digest to 4ba5d28

Author: renovate[bot]

Gemfile

@@ -14,7 +14,7 @@ group :test do
   gem 'capybara'
   gem 'rackup'
   gem 'rspec', '~> 3.12'
-  gem 'rubocop-config', github: 'jgraichen/rubocop-config', ref: 'c312e7ed798140900469f5052c33413cea676475', require: false
+  gem 'rubocop-config', github: 'jgraichen/rubocop-config', ref: '4ba5d2899894ff6a0d01d09b78a816767212067c', require: false
   gem 'selenium-webdriver'
   gem 'webrick'
 end