Bundler-2.4 requires Ruby 2.6 or later

[hsbt]

Resolved #422

[MSP-Greg]

Thanks for a PR on Christmas Eve (Happy Holidays/Merry Christmas!)

Not my call, but...

Would it be better to force install of RG 3.2.3 (which correctly handles required_ruby_version), rather than force a bundler version? I think that can be done such that it leaves Ruby 2.6 and later alone. I think I can do that quickly...

[eregon]

Thank you for the PR!

[hsbt]

Hi Greg, Eregon, Happy Holidays and Thanks for all your works for Ruby.

Would it be better to force install of RG 3.2.3 (which correctly handles required_ruby_version), rather than force a bundler version?

It's not needed yet. Because RubyGems is internally usage different with Bundler by Ruby users.

[eregon]

@MSP-Greg That would choose the same Bundler version, but also update RubyGems which users unlikely have done locally to the same version + a more risky change

[eregon]

https://github.com/ruby/setup-ruby/releases/tag/v1.129.0