Fix GH actions for python 3.8 and 3.9

[Scott Chamberlain]

('Received response with content-encoding: gzip, but failed to decode it.', error('Error -3 while decompressing data: incorrect header check'))

both of those versions of python are throwing that error on tests

pretty sure it's because in older versions of python (3.8, 3.9) base64 data is being recordedd in vcr cassettes, whereas in new versions of python (3.10 and up) regular strings are being recorded in vcr cassettes. right now we have regular strings in the cassette bodies, so 3.8 and 3.9 are failing