MAINT: update infrastructure

[martinfleis]

Moving to pyproject.toml and setuptools_scm.

I have also included GHA to do the relase, but for that I will need one of the PyPI maintainers (@jorisvandenbossche, @darribas, @ljwolf) to add the access token as a PYPI_API_TOKEN secret.

[martinfleis]

Failures here are unrelated. I think that OSM HOT is being continuously updated based on the latest status of OSM so our hard-coded tests will need to be adapted.

[jorisvandenbossche]

Looking into a token right now

[jorisvandenbossche]

Token has been set up.

For the failing tests, should we try to kind of mock a server with some files added as test data, so that those are stable?
But we can maybe leave that for after a quick release, and relax the three failing tests for now?

[martinfleis]

I have relaxed the tests now. If this passes I'l merge, push changelog and cut a release to fix the numerous downstream breakages.

[martinfleis]

We don't have a changelog here... so I'll just cut the release.

[jorisvandenbossche]

Thanks! (and you can add some notes to the github release)