Hash value omission was introduced with ruby 3.1 - rubyreferences.github.io/rubychanges/3.1.html#values-in-hash-literals-and-keyword-arguments-can-be-omitted

And apparently it breaks codeclimate-duplication engine:
Skipping file examle.rb due to exception (Racc::ParseError): example.rb:5 :: parse error on value ":" (tCOLON)

example.rb content:

# frozen_string_literal: true

class Example
  def perform(id)
    Model.find_by!(id:)
  end
end

Thanks