fix(dependencies): Switch from catch22 to pycatch22
WHY IS THIS CHANGE NEEDED?:
- catch22 developers deleted it from pyPI and moved it to pycatch22
HOW DOES THE CHANGE SOLVE THE PROBLEM?:
- used poetry to remove catch22 and add pycatch22
- updated the only thing in postprocesses that depends on catch22
POTENTIAL SIDE EFFECTS:
- we don't have a specific test for catch22, so we only know that it doesn't break, but don't know whether the output is what we want
REFERENCES:
- issue #26 (closed)