Update changelog

CHANGELOG.md

@@ -11,6 +11,7 @@
 * **Cache**: Adds support for using out of proc caching in the backend [#10816](https://github.com/grafana/grafana/issues/10816)
 * **Dataproxy**: Make it possible to add user details to requests sent to the dataproxy [#6359](https://github.com/grafana/grafana/issues/6359) and [#15931](https://github.com/grafana/grafana/issues/15931)
 * **Auth**: Support listing and revoking auth tokens via API [#15836](https://github.com/grafana/grafana/issues/15836)
+* **Datasource**: Only log connection string in dev environment [#16001](https://github.com/grafana/grafana/issues/16001)
 
 ### Bug Fixes
 * **Api**: Invalid org invite code [#10506](https://github.com/grafana/grafana/issues/10506)