Merge pull request #260 from OpenVoxProject/dependabot/bundler/mocha-tw-3.1

Update mocha requirement from ~> 1.0 to ~> 3.1

Author: bastelfreak

Gemfile

@@ -48,7 +48,7 @@ group :test do
   gem 'syslog'
   gem 'puppet-pson', '~> 1.1'
 
-  gem 'mocha', '~> 1.0'
+  gem 'mocha', '~> 3.1'
 end
 
 group :development do