devel/py-lxml: Allow build with cython 3.3.0+

[michaelo]

This is required for https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=298650

[vishwin]

Upstream is explicitly not allowing cython 3.3 for the 6.1 branch. The 7.0 branch, which is still only in beta, requires cython 3.3 or later, however.

[michaelo]

In D59848#1373592, @vishwin wrote:

Upstream is explicitly not allowing cython 3.3 for the 6.1 branch. The 7.0 branch, which is still only in beta, requires cython 3.3 or later, however.

I am aware of that. It did build for me. I have dependencies which require 3.3.0, I will try to downgrade them, but that gap will be getting larger. What would be your proposal?

[michaelo]

Here is the reason for 3.3.0: https://github.com/pythongssapi/python-gssapi/commit/4a4d42d22bcd0e2fc99b9b87197b16d825a62528

Bumps the Cython build version to 3.3.0 that incorporates various bugfixes and CPython 3.15 compatibility.