rubygems/rubygems v3.3.12

on GitHub

Enhancements:

• Less error swallowing when installing gems. Pull request #5475 by
  deivid-rodriguez
• Stop considering RUBY_PATCHLEVEL for resolution. Pull request #5472 by
  deivid-rodriguez
• Bump vendored optparse to latest master. Pull request #5466 by
  deivid-rodriguez
• Installs bundler 2.3.12 as a default gem.

Documentation:

• Fix formatting in docs. Pull request #5470 by peterzhu2118
• Fix a typo. Pull request #5401 by znz