changelog: adds note about closing #11670

CHANGELOG.md

@@ -32,6 +32,7 @@
 * **Dashboard**: Validate uid when importing dashboards [#11515](https://github.com/grafana/grafana/issues/11515)
 * **Docker**: Support for env variables ending with _FILE [grafana-docker #166](https://github.com/grafana/grafana-docker/pull/166), thx [@efrecon](https://github.com/efrecon)
 * **Alert list panel**: Show alerts for user with viewer role [#11167](https://github.com/grafana/grafana/issues/11167)
+* **Provisioning**: Verify checksum of dashboards before updating to reduce load on database [#11670](https://github.com/grafana/grafana/issues/11670)
 
 # 5.1.3 (2018-05-16)