changelog: note about closing #9784

CHANGELOG.md

@@ -16,6 +16,7 @@
 
 ## Minor
 * **Alert panel**: Adds placeholder text when no alerts are within the time range [#9624](https://github.com/grafana/grafana/issues/9624), thx [@straend](https://github.com/straend)
+* **Mysql**: MySQL enable MaxOpenCon and MaxIdleCon regards how constring is configured.  [#9784](https://github.com/grafana/grafana/issues/9784), thx [@dfredell](https://github.com/dfredell)
 
 ## Tech
 * **RabbitMq**: Remove support for publishing events to RabbitMQ [#9645](https://github.com/grafana/grafana/issues/9645)