Recently released Python 3.12.6 dropped support for Mac OS 10.9-10.12 - https://www.python.org/downloads/release/python-3126/
And Python 3.12.6 is the one that's used by compiled builds from now - in our case it was fonttools (used by ezdxf) that compiled binaries and it's using cibuildwheel which is also started using Python 3.12.6 as it's released.