Add changelog entry

Signed-off-by: John Mazanec <jmazane@amazon.com>

CHANGELOG.md

@@ -122,6 +122,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - [BWC and API enforcement] Introduce checks for enforcing the API restrictions ([#11175](https://github.com/opensearch-project/OpenSearch/pull/11175))
 - Create separate transport action for render search template action ([#11170](https://github.com/opensearch-project/OpenSearch/pull/11170))
 - Add additional handling in SearchTemplateRequest when simulate is set to true ([#11591](https://github.com/opensearch-project/OpenSearch/pull/11591))
+- Add option to set user for test cluster to perform health checks during run with security enabled ([#11641](https://github.com/opensearch-project/OpenSearch/pull/11641))
 
 ### Dependencies
 - Bump Lucene from 9.7.0 to 9.8.0 ([10276](https://github.com/opensearch-project/OpenSearch/pull/10276))