Use SPDX short code for license in Pyproject.toml

[schallis]

I noticed that the license for this project on Pypi¹ lists two licenses (BSD License, Other/Proprietary License (BSD)) when it should probably only list the first.

Software supply chain tools like Sonatype² rely on these fields being set correctly when determining whether to block or allow packages to be installed. Because a license of type Other/Proprietary is being shown on Pypi, Sonatype is restricting access to this package for my organization even though it is BSD licensed and valid for commercial use. I believe this is because the pyproject.toml license attribute is set to an unrecognized string and thus mapped to Other/Proprietary.

This PR attempts to fix the issue by instead specifying a valid SPDX³ short code as specified in the Poetry docs⁴.

Footnotes

1. https://pypi.org/project/django-auth-adfs/ ↩

2. https://www.sonatype.com ↩

3. https://spdx.org/licenses/BSD-2-Clause.html ↩

4. https://python-poetry.org/docs/pyproject/ ↩

[JonasKs]

Thanks! 😊