Upgrade the CI environment to Python 3.12 #155

	---
	name: CI

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	jobs:
	checks:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	cache: 'pip'
	- name: Install vim
	run: \|
	sudo add-apt-repository ppa:jonathonf/vim
	sudo apt install vim
	- name: Run lint
	run: \|
	pip install -r requirements.txt
	make lint
	- name: Run tests
	run: make test

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