Bump rubocop-rails from 2.2.1 to 2.3.1 (#3836) [ci skip]

Bumps [rubocop-rails](https://github.com/rubocop-hq/rubocop-rails) from 2.2.1 to 2.3.1.
- [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/v2.2.1...v2.3.1)

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

Gemfile

@@ -128,7 +128,7 @@ group :development, :test do
   gem "rspec-rails", "~> 3.8" # rspec-rails is a testing framework for Rails 3+
   gem "rubocop", "~> 0.74", require: false # Automatic Ruby code style checking tool
   gem "rubocop-performance", "~> 1.4", require: false # A collection of RuboCop cops to check for performance optimizations in Ruby code
-  gem "rubocop-rails", "~> 2.2", require: false # Automatic Rails code style checking tool
+  gem "rubocop-rails", "~> 2.3", require: false # Automatic Rails code style checking tool
   gem "rubocop-rspec", "~> 1.35", require: false # Code style checking for RSpec files
   gem "spring", "~> 2.1" # Preloads your application so things like console, rake and tests run faster
   gem "spring-commands-rspec", "~> 1.0" # rspec command for spring

Gemfile.lock

@@ -650,7 +650,7 @@ GEM
       unicode-display_width (>= 1.4.0, < 1.7)
     rubocop-performance (1.4.1)
       rubocop (>= 0.71.0)
-    rubocop-rails (2.2.1)
+    rubocop-rails (2.3.1)
       rack (>= 1.1)
       rubocop (>= 0.72.0)
     rubocop-rspec (1.35.0)
@@ -929,7 +929,7 @@ DEPENDENCIES
   rspec-retry (~> 0.6)
   rubocop (~> 0.74)
   rubocop-performance (~> 1.4)
-  rubocop-rails (~> 2.2)
+  rubocop-rails (~> 2.3)
   rubocop-rspec (~> 1.35)
   ruby-prof (~> 1.0)
   rubyzip (~> 1.2)