Gem::Commands::OutdatedCommand#execute

# File tmp/rubies/ruby-4.0.0/lib/rubygems/commands/outdated_command.rb, line 28
def execute
  Gem::Specification.outdated_and_latest_version.each do |spec, remote_version|
    say "#{spec.name} (#{spec.version} < #{remote_version})"
  end
end