In my gem, I am getting a bunch of deprecated calls and classes when installing, like:
/usr/lib/ruby/vendor_ruby/rubygems/defaults/operating_system.rb:10: warning: constant Gem::ConfigMap is deprecated
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
I am worried about the rubyforge_project call, as some of the gems (mainly pdf-writer) I am relying on are no longer maintained. How should I go about fixing those warnings? Can someone update pdf-writer?