fix: use sys.exit() instead of just exit()

[joseph-sentry]

related to: #370

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7c5d874) 96.01% compared to head (2fc9d87) 96.01%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #371   +/-   ##
=======================================
  Coverage   96.01%   96.01%           
=======================================
  Files          81       81           
  Lines        2813     2814    +1     
=======================================
+ Hits         2701     2702    +1     
  Misses        112      112           

Flag	Coverage Δ
python3.10	96.30% <100.00%> (+<0.01%)	⬆️
python3.11	96.30% <100.00%> (+<0.01%)	⬆️
python3.8	96.27% <100.00%> (+<0.01%)	⬆️
python3.9	96.27% <100.00%> (+<0.01%)	⬆️

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[giovanni-guidini]

Not sure how this helps with the problem, but OK

Next time if you could include an example of why this solves the issue it would be positive for the reader

[joseph-sentry]

since the error message in the original ticket mentions the exit command not being defined I'm assuming it's because we're using the exit function not in sys which apparently is meant only for use in the python REPL and shouldn't be used in programs, in the case that site is not loaded (see: https://docs.python.org/3/library/constants.html#constants-added-by-the-site-module)