update changlog

Author: Jef Spaleta

CHANGELOG.md

@@ -7,6 +7,7 @@ This CHANGELOG follows the format listed [here](https://github.com/sensu-plugins
 ### Changes
 - Updated development dependency to bundler ~> 2.1
 - Updated development dependency to rake ~> 13.0 
+- Updated development dependency to test-kitchen ~> 1.25.0 
 - Updated runtime dependency to 'pg' '1.2.1' from 1.1   
 - Updated runtime dependency 'dentaku' '3.3.4' from 2.04