rubygems/rubygems v3.3.18

on GitHub

Enhancements:

• Make platform universal-mingw32 match "x64-mingw-ucrt". Pull request
  #5655 by johnnyshields
• Add more descriptive messages when gem update fails to update some
  gems. Pull request #5676 by brianleshopify
• Installs bundler 2.3.18 as a default gem.

Bug fixes:

• Make sure RubyGems prints no warnings when loading plugins. Pull request
  #5607 by deivid-rodriguez