Bump download and upload artifact actions from version 3 to 4 #446

	name: Tests
	on: [pull_request, push]

	jobs:
	tests:
	name: "Tests"
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v1
	with:
	python-version: "3.8"
	- name: Install dependencies
	run: \|
	python -m pip install -U setuptools pip
	python -m pip install -e .[test]
	- name: Tests
	run: "python -m pytest"

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