fix error

fix this error  -> error: enumeration value 'ESP_GATTS_SEND_SERVICE_CHANGE_EVT' not handled in switch [-Werror=switch]

Author: HotIce0

components/nkolban_BLE/BLEUtils.cpp

@@ -989,6 +989,9 @@ std::string BLEUtils::gattServerEventTypeToString(esp_gatts_cb_event_t eventType
 	case ESP_GATTS_REG_EVT:
 		return "ESP_GATTS_REG_EVT";
 
+	case ESP_GATTS_SEND_SERVICE_CHANGE_EVT:
+		return "ESP_GATTS_SEND_SERVICE_CHANGE_EVT";
+			
 	case ESP_GATTS_READ_EVT:
 		return "ESP_GATTS_READ_EVT";