Bump RuboCop version to 0.71

[yahonda]

This pull request bump sRuboCop version to 0.71

https://github.com/rubocop-hq/rubocop/releases/tag/v0.71.0

Additional changes made:

• Install rubocop-rails gem because Rails cops will be removed from RuboCop 0.72

• Rename Layout/FirstParameterIndentation to Layout/IndentFirstArgument to support RuboCop 0.68.0

$ bundle exec rubocop
Error: The `Layout/FirstParameterIndentation` cop has been renamed to `Layout/IndentFirstArgument`.
(obsolete configuration found in .rubocop.yml, please update it)
$

• Use rubocop-0-71 channel at Code Climate
  Refer https://github.com/codeclimate/codeclimate/releases/tag/v0.85.3

[yahonda]

@koic I'm requesting your review because it gets these warnings. These warnings can be addressed by removing require: rubocop-rails from .rubocop.yml.

$ bundle exec rubocop
... snip ...
.rubocop.yml:1: `require` is concealed by line 2
Warning: unrecognized cop Performance/FlatMap found in .rubocop.yml
Warning: unrecognized cop Performance/RedundantMerge found in .rubocop.yml
Warning: unrecognized cop Performance/StartWith found in .rubocop.yml
Warning: unrecognized cop Performance/EndWith found in .rubocop.yml
Warning: unrecognized cop Performance/RegexpMatch found in .rubocop.yml
Warning: unrecognized cop Performance/ReverseEach found in .rubocop.yml
Warning: unrecognized cop Performance/UnfreezeString found in .rubocop.yml
Inspecting 66 files
..................................................................

66 files inspected, no offenses detected
$

Maybe I am misunderstanding this message bundle install. like RuboCop 0.71 still bundles Rails cops we will need to take this action suggested with RuboCop 0.72, not with 0.71.

Rails cops will be removed from RuboCop 0.72. Use the rubocop-rails gem instead.

Put this in your Gemfile.

gem 'rubocop-rails'

And then execute:

$ bundle install

Put this into your .rubocop.yml.

require: rubocop-rails

More information: https://github.com/rubocop-hq/rubocop-rails

[yahonda]

@koic Nevermind for my previous question, already answered by this pull request.
https://github.com/rubocop-hq/rubocop-rails/pull/66/files

[koic]

I think it is preferable to move in ASCII order.
Ref: https://github.com/rails/rails/pull/36426/files#r291066852

[yahonda]

Agreed.

[koic]

rails/rails#36426 has been merged. Thanks!