changelog: add notes about closing #11882

[skip ci]

CHANGELOG.md

@@ -3,6 +3,7 @@
 ### New Features
 
 * **Elasticsearch**: Alerting support [#5893](https://github.com/grafana/grafana/issues/5893), thx [@WPH95](https://github.com/WPH95)
+* **Login**: Change admin password after first login [#11882](https://github.com/grafana/grafana/issues/11882)
 * **Alert list panel**: Updated to support filtering alerts by name, dashboard title, folder, tags [#11500](https://github.com/grafana/grafana/issues/11500), [#8168](https://github.com/grafana/grafana/issues/8168), [#6541](https://github.com/grafana/grafana/issues/6541)
 
 ### Minor