Update CHANGELOG.md for #7927

CHANGELOG.md

@@ -14,6 +14,7 @@ IMPROVEMENTS:
 * `azurerm_app_service_slot` - support for the `application_logs.file_system` [GH-7311]
 * `azurerm_firewall` - no longer requires a `zone` [GH-7817]
 * `azurerm_function_app_slot` - support for the `site_config.auto_swap_slot_name` property [GH-7859]
+* `azurerm_kubernetes_cluster` - support for in-place upgrade from `Free` to `Paid` for `sku_tier` [GH-7927]
 * `azurerm_monitor_scheduled_query_rules_alert` - `action.0.custom_webhook_payload` is now sent as empty to allow for Azure's default to take effect[GH-7838]
 * `azurerm_search_service` - support for the `public_network_access_enabled` property [GH-7867]
 * `azurerm_servicebus_subscription` - support for the `status` property [GH-7852]