Updated: ruby-goocanvas2-2.2.0-5

[Daisuke Fujimura via Cygwin-announce]

The following packages have been uploaded to the Cygwin distribution:

- https://cygwin.com/packages/summary/ruby-goocanvas2-src.html
  - ruby-goocanvas2
  - ruby-goocanvas2-doc
  - ruby-goocanvas2-devel