Data for single cell problem sets lives in another repository

[taliaferrojm]

Data for those problem sets lives here: https://github.com/rnabioco/molb-7950-data/tree/main/block-rna/scrnaseq/data

It's not necessarily a problem, but you have to make sure that that data gets into the Posit cloud assignment. It would be simpler if it was in this repository, that way it automatically gets uploaded to posit when we make the template assignment.