The imp module is removed with Python 3.12

[dvzrv]

Hi! 👋

We're currently cleaning up packages for the Python 3.12 rebuild on Arch Linux.

I noticed that the tests in this repository are still using the imp module

Qt.py/tests.py

Line 6 in 2c0f4dc

import imp

This module has been removed with Python 3.12:
https://docs.python.org/dev/whatsnew/3.12.html#imp