Raise matplotlib lower bound

[stefmolin]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.80%. Comparing base (442a569) to head (86a0782).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #304   +/-   ##
=======================================
  Coverage   98.80%   98.80%           
=======================================
  Files          84       84           
  Lines        2099     2099           
  Branches      123      123           
=======================================
  Hits         2074     2074           
  Misses         24       24           
  Partials        1        1           

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