Update changelog for #7202

Author: mbfrahry

CHANGELOG.md

@@ -10,6 +10,7 @@ FEATURES:
 * **New Data Source:** `azurerm_blueprint_published_version` [GH-6930]
 * **New Resource:** `azurerm_blueprint_assignment` [GH-6930]
 * **New Resource:** `azurerm_data_factory_linked_service_key_vault` [GH-6971]
+* **New Resource:** `azurerm_iot_time_series_insights_access_policy` [GH-7202]
 * **New Resource:** `azurerm_iot_time_series_insights_reference_data_set` [GH-7112]
 * **New Resource:** `azurerm_app_service_hybrid_connection` [GH-7224]