changelog: adds note about closing #11893

CHANGELOG.md

@@ -10,6 +10,7 @@
 * **Stackdriver**: Not possible to authenticate using GCE metadata server [#13669](https://github.com/grafana/grafana/issues/13669)
 * **Teams**: Team preferences (theme, home dashboard, timezone) support [#12550](https://github.com/grafana/grafana/issues/12550)
 * **Graph**: Time regions support enabling highlight of weekdays and/or certain timespans [#5930](https://github.com/grafana/grafana/issues/5930)
+* **Auth**: Automatic redirect to sign-in with OAuth [#11893](https://github.com/grafana/grafana/issues/11893), thx [@Nick-Triller]https://github.com/Nick-Triller
 
 ### Minor