build: use pytest-cov and deptry

[natelandau]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.32%. Comparing base (5ccf463) to head (b363402).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #202      +/-   ##
==========================================
+ Coverage   78.27%   78.32%   +0.04%     
==========================================
  Files          75       75              
  Lines        4364     4364              
  Branches      502      502              
==========================================
+ Hits         3416     3418       +2     
  Misses        810      810              
+ Partials      138      136       -2     

see 2 files with indirect coverage changes