Bump actions/checkout from 3 to 4 #95

	on:
	push:
	paths:
	- '**.py'
	- '.github/pythonchecks.txt'
	- '.github/workflows/python.yml'

	pull_request:
	paths:
	- '**.py'
	- '.github/pythonchecks.txt'
	- '.github/workflows/python.yml'

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python: ['3.9', '3.10']
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: true
	- name: Python ${{ matrix.python }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python }}
	- name: Install packages
	run: \|
	sudo apt-get update
	sudo apt-get install -y libgnutls28-dev
	pip install -U pip
	pip install -r .github/pythonchecks.txt
	- name: Run tests
	run: \|
	flake8 py --ignore=E501,W503,SFS301
	mypy py --ignore-missing-imports

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