Fix quilt3 tests under windows

[nl0]

Description

TODO

• Unit tests
• Security: Confirm that this change meets security best practices and does not violate the security model
• Open and Embed: Confirm that this change doesn't break Open variant and Embed widget
• Documentation
  • run optipng on any new PNGs
  • Python: Run build.py for new docstrings
  • JavaScript: basic explanation and screenshot of new features
  • Markdown somewhere in docs/**/*.md that explains the feature to end users (said .md files should be linked from SUMMARY.md so they appear on https://docs.quilt.bio)
  • Markdown docs for developers
• Changelog entry (skip if change is not significant to end users, e.g. docs only)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.55%. Comparing base (4c837fb) to head (344cac0).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4551      +/-   ##
==========================================
+ Coverage   39.40%   39.55%   +0.14%     
==========================================
  Files         852      852              
  Lines       36854    36914      +60     
  Branches     6017     5765     -252     
==========================================
+ Hits        14524    14602      +78     
- Misses      21105    21794     +689     
+ Partials     1225      518     -707     

Flag	Coverage Δ
api-python	91.99% <100.00%> (+0.31%)	⬆️
catalog	20.13% <ø> (ø)
lambda	92.60% <ø> (ø)

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