BOTD fixup
* d/control: remove Breaks: ruby-hpricot (removed in bullseye)
(Closes: #680908)
* Create d/p/two-arg-rb_rescue-handler for compatibility with ruby 2.7
(Closes: #1075459)
* d/control: remove Homepage: rubyforge.org (dead site, found no new upstream)
* d/copyright: replace with Source: rubygems.org (also ends at 0.8.0)
* d/control: remove ruby-interpreter from Depends: list
(lintian ruby-interpreter-is-deprecated)
* debhelper compat level 13