changelog: adds note for #11892

CHANGELOG.md

@@ -7,6 +7,7 @@
 
 * **Api**: Delete nonexistent datasource should return 404 [#12313](https://github.com/grafana/grafana/issues/12313), thx [@AustinWinstanley](https://github.com/AustinWinstanley)
 * **Dashboard**: Fix selecting current dashboard from search should not reload dashboard [#12248](https://github.com/grafana/grafana/issues/12248)
+* **Singlestat**: Make colorization of prefix and postfix optional in singlestat [#11892](https://github.com/grafana/grafana/pull/11892), thx [@ApsOps](https://github.com/ApsOps)
 
 # 5.2.1 (unreleased)