drop 3.8, add pytest-retry

[sigma67]

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 93.38%. Comparing base (8cc72e3) to head (6c993ec). Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #592      +/-   ##
==========================================
- Coverage   93.55%   93.38%   -0.18%     
==========================================
  Files          36       36              
  Lines        2235     2236       +1     
==========================================
- Hits         2091     2088       -3     
- Misses        144      148       +4     

Flag	Coverage Δ
unittests	93.38% <100.00%> (-0.18%)	:arrow_down:

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