changelog: adds note for #11128

CHANGELOG.md

@@ -26,6 +26,7 @@
 * **AuthProxy**: Support IPv6 in Auth proxy white list [#11330](https://github.com/grafana/grafana/pull/11330), thx [@corny](https://github.com/corny)
 * **SMTP**: Don't connect to STMP server using TLS unless configured. [#7189](https://github.com/grafana/grafana/issues/7189)
 * **Prometheus**: Escape backslash in labels correctly. [#10555](https://github.com/grafana/grafana/issues/10555), thx [@roidelapluie](https://github.com/roidelapluie)
+* **Variables** Case-insensitive sorting for template values [#11128](https://github.com/grafana/grafana/issues/11128) thx [@cross](https://github.com/cross)
 
 # 5.0.4 (2018-03-28)