Rebuild for Python 3.13 (fixed)

[mparry]

This is simply #32 with one extra commit to bring the Cython dependency in line with the upstream repository, i.e. it updates the constraint from >=0.29.29,<3.0.0a0 to >=3.0.3,<4.0.0a0. The original constraint was now failing under Python 3.13 since there are only Cython 3+ builds there.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

• ℹ️ No valid build backend found for Python recipe for package python-gssapi using pip. Python recipes using pip need to explicitly specify a build backend in the host section. If your recipe has built with only pip in the host section in the past, you likely should add setuptools to the host section of your recipe.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/12253008639. Examine the logs at this URL for more detail.}

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

[mparry]

Hi, @dhirschfeld, I couldn't update the original bot PR so hopefully this solution is still helpful! All builds seem ok now.

[dhirschfeld]

Thanks @mparry - LGTM!