Use RuboCop Performance 1.24 for development

This commit uses RuboCop Performance 1.24 for development and suppresses the following warning:

```console
$ bundle exec rubocop
rubocop-performance extension supports plugin, specify `plugins: rubocop-performance`
instead of `require: rubocop-performance` in /Users/koic/src/github.com/rubocop/rubocop-rails/.rubocop.yml.
For more information, see https://docs.rubocop.org/rubocop/plugin_migration_guide.html.
```

Author: koic

.rubocop.yml

@@ -3,10 +3,10 @@
 inherit_from: .rubocop_todo.yml
 plugins:
   - rubocop-internal_affairs
+  - rubocop-performance
   - rubocop-rails
 
 require:
-  - rubocop-performance
   - rubocop-rspec
 
 AllCops:

Gemfile

@@ -11,7 +11,7 @@ gem 'prism'
 gem 'rake'
 gem 'rspec'
 gem 'rubocop', github: 'rubocop/rubocop'
-gem 'rubocop-performance', '~> 1.23.0'
+gem 'rubocop-performance', '~> 1.24.0'
 gem 'rubocop-rspec', '~> 3.3.0'
 gem 'simplecov'
 gem 'test-queue'