Also bump upload-artifact to v4 #649

	name: Main pipeline

	on: [push]

	concurrency:
	group: ${{ github.ref }}
	cancel-in-progress: true

	jobs:
	black:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: '3.11'
	- run: pip install tox
	- name: Run black
	run: tox -e black

	flake8:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: '3.11'
	- run: pip install tox
	- name: Run flake8
	run: tox -e flake8

	test:
	needs:
	- black
	- flake8
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	sudo apt-get update && sudo apt-get install libxml2-dev libxslt-dev
	python -m pip install --upgrade pip
	pip install tox
	- name: Run unit tests
	env:
	TOX_COV_SUFFIX: py${{ matrix.python-version }}
	run: tox -e pytest
	- name: Upload coverage
	uses: actions/upload-artifact@v4
	with:
	path: .coverage.py${{ matrix.python-version }}

	coverage:
	needs: test
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: '3.8'
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install coverage
	- name: Download coverage results
	uses: actions/[email protected]
	- name: Compute coverage
	run: \|
	coverage combine artifact/
	coverage report -i -m --fail-under=100

Provide feedback