Python 3.12 support

[r7sy]

Is your feature request related to a problem? Please describe.
Would like to use dowhy in a Python 3.12 project.

Describe the solution you'd like

• Python 3.12 support

[yechs]

Running from dowhy import gcm results in the following error in Python 3.12:

ModuleNotFoundError: No module named 'numpy.distutils'

Likely caused by numpy.distutils's removal in Python >= 3.12.
See https://numpy.org/doc/stable/reference/distutils_status_migration.html

[amit-sharma]

@bloebp can you take a look? We can aim to do a release that supports 3.12

[bloebp]

Some of the requirements are (or were) not supporting Python 3.12, that's why we excluded it in the last release. However, that might have changed in the mean time and should be checked again. We can certainly aim at a new release and also deprecate 3.8 support.