Read VisiumHD data through SpatialData / Support for Python 3.9

Hi,
I'd like to read a SpatialData object of a VisiumHD experiment

`sdata = spatialdata.SpatialData.read('/sdata_clustering_008um_filtered')`

though in the installation guide stLearn is indicated to be run on python 3.8 which is not compatible with SpatialData. 
Is there a proper way to work with stLearn on VisiumHD data, starting with loading the data?
