BLD/CI: Remove local version specifier for TestPyPI uploads

[richardotis]

Removes local version specifier (+hash) from CI builds to allow for upload of artifacts to TestPyPI. Follows the strategy outlined in pypa/setuptools-scm#455 (comment)

Checklist

• If any dependencies have changed, the changes are reflected in the
  • setup.py (runtime requirements)
  • pyproject.toml (build requirements)
  • requirements-dev.txt (build and development requirements)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.46%. Comparing base (6c7b009) to head (920380a).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #534   +/-   ##
========================================
  Coverage    90.46%   90.46%           
========================================
  Files           50       50           
  Lines         7885     7885           
========================================
  Hits          7133     7133           
  Misses         752      752           

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[richardotis]

The environment variable isn't being detected properly. I think a different approach is needed.

[richardotis]

This appears to be working as of e11ac48. Now I'm going to enable the branch condition, wait for tests to pass, merge to develop, and confirm the upload to TestPyPI works.