Add Ruby 2.6.10, 2.7.6, 3.0.4, 3.1.2

v1.101.0

Add ruby-3.1.2

Fix bundler: with a minor version

• #306

Add jruby-9.3.4.0

v1.100.0

Add jruby-9.3.4.0

Add ruby-3.1.1 on Windows

v1.99.0

Add ruby-3.1.1 on Windows

Add ruby-3.1.1

v1.98.0

Fix test, 3.1.1 has a newer RubyGems

Use the shipped Bundler on TruffleRuby 22.0

* To workaround https://github.com/oracle/truffleruby/issues/2586

Allow bundler: none + bundle-cache: true

v1.96.0

Allow bundler: none + bundle-cache: true to use the Bundler shipped w…

Add truffleruby-22.0.0.2

v1.95.0

Simplify to 22.0.0 in README (both work)

Add jruby-9.3.3.0

v1.94.0

Add jruby-9.3.3.0

Add a new input to optionally update RubyGems

See #271, #228