changelog: add notes about closing #15077

CHANGELOG.md

@@ -1,6 +1,8 @@
-
 # 6.1.0 (unreleased)
 
+### Minor
+* **Cloudwatch**: Add AWS RDS MaximumUsedTransactionIDs metric [#15077](https://github.com/grafana/grafana/pull/15077), thx [@activeshadow](https://github.com/activeshadow)
+
 ### Bug Fixes
 * **Api**: Invalid org invite code [#10506](https://github.com/grafana/grafana/issues/10506)
 * **Datasource**: Handles nil jsondata field gracefully [#14239](https://github.com/grafana/grafana/issues/14239)