Matplotlib 3.11.0 fixes

[rcjackson]

Fixes to make PyDDA compatible with Matplotlib 3.11.0

[codecov]

Codecov Report

❌ Patch coverage is 20.00000% with 24 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.38%. Comparing base (ec4a9b9) to head (a18445d).
⚠️ Report is 19 commits behind head on main.

Files with missing lines	Patch %	Lines
pydda/vis/barb_plot.py	25.00%	12 Missing ⚠️
pydda/vis/quiver_plot.py	14.28%	6 Missing ⚠️
pydda/vis/streamline_plot.py	14.28%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #161      +/-   ##
==========================================
+ Coverage   68.85%   70.38%   +1.52%     
==========================================
  Files          32       32              
  Lines        5141     5315     +174     
==========================================
+ Hits         3540     3741     +201     
+ Misses       1601     1574      -27     

Flag	Coverage Δ
unittests	70.38% <20.00%> (+1.52%)	⬆️

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