Bundler/DuplicatedGroup undefined method

[Carlgo11]

Expected behavior

Preferably, to Rubocop not to return errors.

$ bundle exec rubocop
Inspecting 15 files
...............

15 files inspected, no offenses detected
$ echo $?
0

Actual behavior

$ bundle exec rubocop
An error occurred while Bundler/DuplicatedGroup cop was inspecting /home/user/Git/2factorauth/twofactorauth/Gemfile.
To see the complete backtrace run rubocop -d.
Inspecting 15 files
An error occurred while Bundler/DuplicatedGroup cop was inspecting /home/user/Git/2factorauth/twofactorauth/Gemfile.
To see the complete backtrace run rubocop -d.
$ echo $?
1
...............

15 files inspected, no offenses detected

1 error occurred:
An error occurred while Bundler/DuplicatedGroup cop was inspecting /home/user/Git/2factorauth/twofactorauth/Gemfile.
Errors are usually caused by RuboCop bugs.
Please, report your problems to RuboCop's issue tracker.
https://github.com/rubocop/rubocop/issues

Mention the following information in the issue report:
1.56.0 (using Parser 3.2.2.3, rubocop-ast 1.29.0, running on ruby 3.1.2) [x86_64-linux-gnu]

Scanning /home/user/Git/2factorauth/twofactorauth/Gemfile
An error occurred while Bundler/DuplicatedGroup cop was inspecting /home/user/Git/2factorauth/twofactorauth/Gemfile.
undefined method `value' for s(:hash,
  s(:pair,
    s(:sym, :optional),
    s(:true))):RuboCop::AST::HashNode

            .group_by { |node| node.arguments.map(&:value).map(&:to_s).sort }
                                             ^^^^
Did you mean?  values

Steps to reproduce the problem

Run Rubocop (using a version where #12074 is included) with the following Gemfile:

# frozen_string_literal: true

source 'https://rubygems.org'

group :tests, optional: true do
  gem 'activesupport'
  gem 'addressable'
  gem 'json_schemer'
  gem 'nokogiri'
  gem 'rubocop'
  gem 'twitter'
end

gem 'algolia', '~> 2.3'
gem 'dotenv', '~> 2.8'
gem 'parallel', '~> 1.22'

RuboCop version

$ bundle exec rubocop -V
1.56.0 (using Parser 3.2.2.3, rubocop-ast 1.29.0, running on ruby 3.1.2) [x86_64-linux-gnu]