Publish v6.0.0 to PyPI

[chris48s]

version 6.0.0 has been tagged on GitHub but not released to PyPI

Looks like the release CI job failed: https://github.com/codingjoe/django-s3file/actions/runs/11782766222

[codingjoe]

Hi there 👋,

Yes, that seems to be the case. It might be for the best, though, since v6 isn't working on Safari #327.

Let's use the opportunity to switch to OIDC releases. However, after #327

Best
Joe