Update CHANGELOG.d to include #4098

CHANGELOG.md

@@ -21,6 +21,7 @@ IMPROVEMENTS:
 * `azurerm_function_app` - support for cors [GH-3949]
 * `azurerm_function_app` - support for the `virtual_network_name` property [GH-4078]
 * `azurerm_iot_dps` - add support for the `linked_hub` property [GH-3922]
+* `azurerm_kubernetes_cluster` - support for the `enable_pod_security_policy` property [GH-4098]
 * `azurerm_monitor_diagnostic_setting` - support for `log_analytics_destination_type` [GH-3987]
 * `azurerm_role_assignment` - now supports management groups [GH-4063]
 * `azurerm_traffic_manager_profile` - support for the `interval_in_seconds`, `timeout_in_seconds`, and `tolerated_number_of_failures` properties [GH-3473]