Update CA certificates bundle to 20130906.
Update CA certificates bundle to 20130906.

http://www.ubuntu.com/usn/usn-2154-1/
https://gist.github.com/ab/9756531

hmcfletch/stripe-ruby,Easybring/stripe-ruby,molawson/stripe-ruby,theicfire/stripe-ruby,finbarr/kickstarter_stripe,stripe/stripe-ruby,HashNuke/stripe-ruby,ajporterfield/stripe-ruby,avvo/stripe-ruby,PivotDesk/stripe-ruby,gizm0duck/stripe-ruby,OutlawAndy/stripe-ruby,alkesh26/stripe-ruby,iloveitaly/stripe-ruby,thestorefront/stripe-ruby,nbrustein/stripe-ruby