for properties and constitutive relations

Fixes Windows binary downloads.

Bump to 3.13 after 6.5.4 release.

Related: ogs/libs/exprtk!3

See
https://pybind11.readthedocs.io/en/stable/faq.html#inconsistent-detection-of-python-version-in-cmake-and-pybind11.

For consistency mainly, but also save one instantiation
of the shape functions.
Also the valarray is kind of obsolete and Eigen provides
equivalent substitute.

Will rebuild all ext packages on msvc.

Works with Visual Studio 2019 only.

New Windows machine has uv-only installed (no pipx).

This reverts commit 2b7dba96.

Lars Bilke authored 6 months ago and Dmitri Naumov committed 4 months ago

https://docs.astral.sh/uv