Don't register an offense when sort method has arguments

[mtsmfm]

Currently, Style/RedundantSort doesn't allow sort(_id: 1).first and suggests min(_id: 1) but it's not equivalent.

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'

  gem 'mongo'
end

mongo_client = Mongo::Client.new('mongodb://mongo/test')
mongo_client['users'].find.sort(_id: 1).first
# => nil

mongo_client['users'].find.min(_id: 1)
# TypeError: no implicit conversion of Hash into Integer

---

Before submitting the PR make sure the following are checked:

• The PR relates to only one subject with a clear title and description in grammatically correct, complete sentences.
• Wrote good commit messages.
  * [ ] Commit message starts with [Fix #issue-number] (if the related issue exists).
• Feature branch is up-to-date with master (if not - rebase it).
• Squashed related commits together.
• Added tests.
• Ran bundle exec rake default. It executes all tests and runs RuboCop on its own code.
• Added an entry (file) to the changelog folder named {change_type}_{change_description}.md if the new code introduces user-observable changes. See changelog entry format for details.

[koic]

Thanks!