Updated Ruby gems

Cucumber 1.3.6 seems to be problematic:

gems/cucumber-1.3.6/lib/cucumber/rb_support/rb_language.rb:122: warning: redundant nested repeat operator: /^** This is a new line/

Updating the rest of the gems too.

Change-Id: Ia173312baa178a45d648fc537c8abf914144bbd5