* Remove obsolete gemfile * Work around issue with the combination of I18n and JRuby See https://github.com/jruby/jruby/issues/6547 and https://github.com/ruby-i18n/i18n/issues/555 * Use correct released versions of activerecord-jdbcsqlite3-adapter * Require CI to pass on JRuby again * Build on latest JRuby 9.2 version
This adds Ruby 3 and Rails 6.1 to the test matrix. It also bumps all the dev dependencies listed in the Gemfiles to the latest versions. We may end up switching over to GitHub actions, but this should get us covered in the meantime.