4.2.gemfile in kt-paperclip-7.0.0

- old
+ new

@@ -9,12 +9,12 @@
 group :development, :test do
   gem "activerecord-import"
   gem "bootsnap", require: false
   gem "builder"
   gem "listen", "~> 3.0.8"
-  gem "mime-types"
   gem "rspec"
   gem "rubocop", require: false
+  gem "rubocop-rails"
   gem "sprockets", "3.7.2"
 end
 
 gemspec path: "../"