Use ruby 2.1.8
Created by: pmq20
Ruby 2.1.8 contains a security fix of CVE-2015-7551 which makes it more preferred.
cf. https://www.ruby-lang.org/en/news/2015/12/16/ruby-2-1-8-released/
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: pmq20
Ruby 2.1.8 contains a security fix of CVE-2015-7551 which makes it more preferred.
cf. https://www.ruby-lang.org/en/news/2015/12/16/ruby-2-1-8-released/