Create pip_install_on_py3_12.yml

[cclauss]

A temporary file to demonstrate the problems that I am having with python3.12 -m pip install PyWavelets

AttributeError: module 'pkgutil' has no attribute 'ImpImporter'. Did you mean: 'zipimporter'?

Test results: https://github.com/PyWavelets/pywt/actions/workflows/pip_install_on_py3_12.yml

• The master branch can be pip-installed on Python 3.12.
• Pip installing the PyPI version of PyWavelets and scikit-image fail on Python 3.12.

This is a different problem than

• 692

[rgommers]

Thanks @cclauss, and apologies for the delay. New release is up now.