Python 3.12 Build

[poodlewars]

Add additional build for Python 3.12 on our platforms (PyPi Linux + Windows, Conda Linux + Mac).

Do PyPi first and then Conda after - since Conda requires the upgrades that Julien describes below.

[jjerphan]

FYI, building for python 3.12 on conda-forge necessitates using at least pybind11 2.11.1 which is the only version built for python 3.12.

Updating ArcticDB to use pybind 2.11.1 necessitates performing changes to make sure the GIL is held before objects' destruction.

See:

• https://github.com/man-group/ArcticDB/pull/647
• https://github.com/pybind/pybind11/issues/4748#issuecomment-1639445403