changelog: add notes about closing #12430

[skip ci]

CHANGELOG.md

@@ -8,6 +8,12 @@
 * **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)
 
+# 5.2.1 (unreleased)
+
+### Minor
+
+* **UI**: Fix - Grafana footer overlapping page [#12430](https://github.com/grafana/grafana/issues/12430)
+
 # 5.2.0-stable (2018-06-27)
 
 ### Minor