ruby: bump version to 2.2.3
This is a bug and security fix release, including:
- CVE-2015-3900 Request hijacking vulnerability in RubyGems 2.4.6 and earlier
http://svn.ruby-lang.org/repos/ruby/tags/v2_2_3/ChangeLog
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>