`python_min` incorrectly specified

Currently `python_min` is set to `3.12`, which appears to be incorrect given the upstream metadata on the package:
https://github.com/appium/python-client/blob/master/setup.py

In the `setup.py`, metadata says it supports versions of python starting with 3.9, and there is no `python_requires` specifying it in code. I believe that the `python_min` should not be explicitly set here and just allow conda-forge to use the global pinning to decide on the version.