[MISC]: Replace tschm/token-mint-action used in publish_pypi

[KathleenLabrie]

Contact Details

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What happened?

tschm/token-mint-action is no longer maintained. It needs to be replaced.

From the project's README.md:

"This action is today obsolete and is no longer maintained. We recommend using PyPI's native trusted publishing directly with GitHub Actions instead. See the PyPI documentation for more information."

Code of Conduct

• I agree to follow this project's Code of Conduct

[KathleenLabrie]

This has been taken care of in commits d710a39 to f6c00b8.

The trusted publishing is set on the repo side but not on the pypi side. That will be tested later when we are ready to release a next version.