chore(deps): bump various dependencies

[gounux]

Superseds and closes #96.
Superseds and closes #97.
Superseds and closes #98.
Superseds and closes #99.
Superseds and closes #100.

Plus some pytest toml compat fixes.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.75%. Comparing base (0a2c5d8) to head (4b00bb2).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #103   +/-   ##
=======================================
  Coverage   80.75%   80.75%           
=======================================
  Files           6        6           
  Lines         582      582           
  Branches       45       45           
=======================================
  Hits          470      470           
  Misses        100      100           
  Partials       12       12           

Flag	Coverage Δ
unittests	80.75% <ø> (ø)

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