Hi @gigaform
welcome to QuickSight Community !!!.
Updatedataset API is to update the definition of the dataset and in order to refresh the data please use Create Ingestion API .
And createIngestion API submit jobs in aysnc way , if required please loop through and check for the status of the ingestion using DescribeIngestion API to determine the state of refresh and continue with next steps. Please find the below sample step function to start ingestion and check for its completion. Instead you can start ingestion using Stepfunction and check the status of refresh in QuickSight Dataset console whenever required.
Thanks
VInod