[rubygems/rubygems] newgem tmpl: ruby as "2.7" in GH Actions matrix
https://github.com/rubygems/rubygems/commit/f5bead5634
[rubygems/rubygems] newgem tmpl: ruby as "2.7" in GH Actions matrix
https://github.com/rubygems/rubygems/commit/f5bead5634