chore: update ruby version, audit some cops#88

viacheslav-rostovtsev merged 3 commits intogoogleapis:maingoogleapis/ruby-style:mainfrom

viacheslav-rostovtsev:dev/virost/chore/update_ruby_31viacheslav-rostovtsev/ruby-style:dev/virost/chore/update_ruby_31Copy head branch name to clipboard