Fix CI Python 3.6 not available on ubuntu-latest github workflow #259

	name: Check

	on:
	push:
	branches: ['*']
	pull_request:
	branches:
	- master
	schedule:
	# run every Monday at 6 AM
	- cron: '0 6 * * 1'

	jobs:
	tests:
	#python 3.6 not available on ubuntu-latest
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python-version: ["3.6.15", "3.8.18"]
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	- name: "Set up Python ${{ matrix.python-version }}"
	uses: actions/setup-python@v4
	with:
	python-version: "${{ matrix.python-version }}"
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements-ci.txt
	- name: "Run tox for ${{ matrix.python-version }}"
	run: \|
	tox

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