changelog: add notes about closing #13633

[skip ci]

CHANGELOG.md

@@ -23,6 +23,7 @@
 * **InfluxDB/Graphite/Postgres**: Prevent cross site scripting (XSS) in query editor [#13667](https://github.com/grafana/grafana/issues/13667), thx [@svenklemm](https://github.com/svenklemm)
 * **Postgres**: Fix template variables error [#13692](https://github.com/grafana/grafana/issues/13692), thx [@svenklemm](https://github.com/svenklemm)
 * **Cloudwatch**: Fix service panic because of race conditions [#13674](https://github.com/grafana/grafana/issues/13674), thx [@mtanda](https://github.com/mtanda)
+* **Cloudwatch**: Fix check for invalid percentile statistics [#13633](https://github.com/grafana/grafana/issues/13633), thx [@apalaniuk](https://github.com/apalaniuk)
 * **Stackdriver/Cloudwatch**: Allow user to change unit in graph panel if cloudwatch/stackdriver datasource response doesn't include unit [#13718](https://github.com/grafana/grafana/issues/13718), thx [@mtanda](https://github.com/mtanda)
 * **Variables**: Fix text box template variable doesn't work properly without a default value [#13666](https://github.com/grafana/grafana/issues/13666)
 * **LDAP**: Fix super admins can also be admins of orgs [#13710](https://github.com/grafana/grafana/issues/13710), thx [@adrien-f](https://github.com/adrien-f)