changelog: adds note for #13561

CHANGELOG.md

@@ -12,6 +12,7 @@
 * **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)
 * **OAuth**: Automatic redirect to sign-in with OAuth [#11893](https://github.com/grafana/grafana/issues/11893), thx [@Nick-Triller](https://github.com/Nick-Triller)
+* **Stackdriver**: Template query editor [#13561](https://github.com/grafana/grafana/issues/13561)
 
 ### Minor