update publishing workflow for pyproject.toml

[stephprince]

Motivation

Since we replaced the setup.py file with pyproject.toml, the release publishing workflow no longer works.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.72%. Comparing base (3aa3dab) to head (cabb7d6).
Report is 2 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #538      +/-   ##
==========================================
+ Coverage   82.68%   86.72%   +4.04%     
==========================================
  Files          47       47              
  Lines        1507     1507              
==========================================
+ Hits         1246     1307      +61     
+ Misses        261      200      -61     

see 5 files with indirect coverage changes

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