updated `omnibus-software` with Nginx and Ruby security fixes
updated `omnibus-software` with Nginx and Ruby security fixes

This version fixes the following vulnerabilities:

* OpenResty 1.4.3.6 - [CVE-2013-4547] - security restriction bypass flaw
  due to whitespace parsing
* Ruby 1.9.3-p484 … [CVE-2013-4164] - Heap Overflow in Floating Point
  Parsing
chef/omnibus-chef-server,chef/omnibus-chef-server,chef/omnibus-chef-server,chef/omnibus-chef-server