Update CHANGELOG.md

Author: morgante

CHANGELOG.md

@@ -10,7 +10,7 @@ Extending the adopted spec, each change should have a link to its corresponding
 ### Added
 
 * Support for Intranode Visbiility (IV) and Veritical Pod Autoscaling (VPA) beta features [#216]
-* Support for Workload Identity beta feature [#234]
+* **Breaking**: Support for Workload Identity beta feature [#234]
 
 ## [v4.1.0] 2019-07-24