ci: Use GITHUB_OUTPUT envvar instead of set-output command #507

	# This workflow will install Python dependencies, run tests and lint with a single version of Python
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	on: pull_request
	jobs:
	pre-commit:
	runs-on: ubuntu-18.04
	steps:
	- name: Checkout
	uses: actions/checkout@v1
	- name: Setup python 3.6
	uses: actions/setup-python@v1
	with:
	python-version: 3.6
	test-unit:
	runs-on: ubuntu-18.04
	strategy:
	matrix:
	python-version: ['3.6.x', '3.7.x']
	steps:
	- name: Checkout
	uses: actions/checkout@v1
	- name: Setup python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: pip3 install -r requirements.txt && pip3 install .[all] && pip3 install codecov
	- name: Run python unit tests
	run: make test

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