fix and improve github release.yml workflow

[ArneBinder]

Should fix the following error (e.g., in step "Publish package on TestPyPI)":

 Checking dist/pytorch_ie-0.31.11.dev1758471385-py3-none-any.whl: ERROR    InvalidDistribution: Metadata is missing required fields: Name,        
         Version.                                                               
         Make sure the distribution includes the files where those fields are   
         specified, and is using a supported Metadata-Version: 1.0, 1.1, 1.2,   
         2.0, 2.1, 2.2, 2.3.

The change to fix this is to use pypa/gh-action-pypi-publish@release/v1. Other changes are minor improvements / modernizations.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.55%. Comparing base (2d06bf2) to head (2fccd4d).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #492      +/-   ##
==========================================
- Coverage   78.32%   72.55%   -5.78%     
==========================================
  Files          32       32              
  Lines        2164     2164              
  Branches      316      316              
==========================================
- Hits         1695     1570     -125     
- Misses        378      513     +135     
+ Partials       91       81      -10     

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