changelog: adds note about closing #8050

CHANGELOG.md

@@ -17,6 +17,7 @@
 * **Unit types**: New date & time unit types added, useful in singlestat to show dates & times. [#3678](https://github.com/grafana/grafana/issues/3678), [#6710](https://github.com/grafana/grafana/issues/6710), [#2764](https://github.com/grafana/grafana/issues/6710)
 * **CLI**: Make it possible to install plugins from any url [#5873](https://github.com/grafana/grafana/issues/5873)
 * **Prometheus**: Add support for instant queries [#5765](https://github.com/grafana/grafana/issues/5765), thx [@mtanda](https://github.com/mtanda)
+* **Cloudwatch**: Add support for alerting using the cloudwatch datasource [#8050](https://github.com/grafana/grafana/pull/8050), thx [@mtanda](https://github.com/mtanda)
 
 ## Minor
 * **SMTP**: Make it possible to set specific EHLO for smtp client. [#9319](https://github.com/grafana/grafana/issues/9319)