MNT: Address deprecation warning in CI

[DimitriPapadopoulos]

FutureWarning: The 'delim_whitespace' keyword in pd.read_csv is deprecated and will be removed in a future version. Use ``sep='\s+'`` instead

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 68.52%. Comparing base (830b4fc) to head (7132e8c).

:exclamation: Current head 7132e8c differs from pull request most recent head 1fbcda5. Consider uploading reports for the commit 1fbcda5 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #864      +/-   ##
==========================================
- Coverage   68.52%   68.52%   -0.01%     
==========================================
  Files          86       86              
  Lines        8220     8218       -2     
  Branches      949      954       +5     
==========================================
- Hits         5633     5631       -2     
  Misses       2580     2580              
  Partials        7        7              

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[effigies]

Is there any chance you've actually built an image you could screenshot? If not, I can put it on my todo list.

[DimitriPapadopoulos]

No, unfortunately no screenshot.