Ignore irrelevant deprecation warning from pandas

[jwodder]

Closes #1390.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (d4b4ea8) 88.46% compared to head (fdf35bd) 88.59%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1391      +/-   ##
==========================================
+ Coverage   88.46%   88.59%   +0.12%     
==========================================
  Files          77       77              
  Lines       10492    10492              
==========================================
+ Hits         9282     9295      +13     
+ Misses       1210     1197      -13     

Flag	Coverage Δ
unittests	88.59% <ø> (+0.12%)	⬆️

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[github-actions]

🚀 PR was released in 0.59.1 🚀