Potential `fsspec` issue with double forwardslash

[nathanjmcdougall]

I noticed that a doctest test fails now, and seems to be related to a more recent release of fsspec. I'm guessing the ffspec github backend doesn't like the two // in this path anymore: pins/tests/pins-compat/df_csv/20220214T163720Z-9bfad//df_csv.csv

Originally posted by @machow in #298 (comment)

[isabelizimm]

Thanks for reporting this! The doctest was resolved in #330