Update upload-to-pypi.yml

[MichaelClerx]

Change packages_dir to packages-dir

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.54%. Comparing base (7925454) to head (da0a5f8).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1738   +/-   ##
=======================================
  Coverage   99.54%   99.54%           
=======================================
  Files          97       97           
  Lines        9762     9762           
=======================================
  Hits         9718     9718           
  Misses         44       44           

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