Add python 3.11 testing #21

	name: build-and-test
	on: [push, workflow_dispatch]
	jobs:
	build:
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python-version: [3.8, "3.11"]
	tox-env:
	- py3-django3
	- py3-django4
	- flake8
	steps:
	- uses: actions/checkout@v3

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Build and Test
	run: \|
	python -m pip install --upgrade pip
	pip install tox==3.28.0
	tox -e ${{ matrix.tox-env }}

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