QgsCoordinateReferenceSystem constructor is deprecated

[billgeo]

Get this warning while add the NZ Topo50 Maps WMTS layer on QGIS 3.16 MacOS Big Sur 11.3

warning:/Users/bmnelson/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/linz-data-importer/linz_data_importer.py:761: DeprecationWarning: QgsCoordinateReferenceSystem constructor is deprecated
              crs = QgsCoordinateReferenceSystem(
             
             traceback: File "/Users/bmnelson/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/linz-data-importer/linz_data_importer.py", line 784, in import_dataset
              self.set_project_srid()
              File "/Users/bmnelson/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/linz-data-importer/linz_data_importer.py", line 761, in set_project_srid
              crs = QgsCoordinateReferenceSystem(