www/rubygem-gollum: remove incorrect dependency

www/rubygem-gollum-lib: add missing dependency

www/rubygem-gollum was depending up on www/rubygem-gollum-rugged_adapter
which should instead be a dependency of www/rubygem-gollum-lib

Also, remove the patch-gemspec.rb patch on www/rubygem-gollum-lib

PR: 261637
Reported by: Sir l33tname <sirl33tname@gmail.com>
Approved by: ruby@ (zi)