changelog: adds note about closing #14546

CHANGELOG.md

@@ -14,6 +14,7 @@
 * **Templating**: Escaping "Custom" template variables [#13754](https://github.com/grafana/grafana/issues/13754), thx [@IntegersOfK](https://github.com/IntegersOfK)
 * **Admin**: When multiple user invitations, all links are the same as the first user who was invited [#14483](https://github.com/grafana/grafana/issues/14483)
 * **LDAP**: Upgrade go-ldap to v3 [#14548](https://github.com/grafana/grafana/issues/14548)
+* **Proxy whitelist**: Add CIDR capability to auth_proxy whitelist [#14546](https://github.com/grafana/grafana/issues/14546), thx [@jacobrichard](https://github.com/jacobrichard)
 
 # 5.4.2 (2018-12-13)