Stop using pickle for serializing test data #37
Description
The test suite creates fixtures using pickle.load. This creates hard-coded dependencies to the libraries that were being used when those pickle files were created. The result is that the test suite randomly fails when we use newer libraries, like this:
https://github.com/SandoghdarLab/PiSCAT/actions/runs/4606677611/jobs/8140277049?pr=36#step:6:64
This should be fixed, so that PiSCAT can be used on more than just a narrow set of libraries.