chore: squelch pyparsing deprecation warnings

[jennifer-richards]

Caused by sciunto-org/python-bibtexparser#502

We could be more selective, but these libraries are only used in tests so I think it's ok to use a sledgehammer.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.57%. Comparing base (4f0102d) to head (ea328e9).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #10239   +/-   ##
=======================================
  Coverage   88.57%   88.57%           
=======================================
  Files         317      317           
  Lines       42544    42544           
=======================================
  Hits        37683    37683           
  Misses       4861     4861           

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