Update actions/checkout action to v3 #8

	name: Python Flake8 Code Quality

	on:
	- push
	- pull_request

	jobs:
	flake8:
	runs-on: ubuntu-20.04

	steps:
	- uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.8

	- name: Install
	run: \|
	python -m pip install --upgrade pip
	pip install flake8==3.8.4
	- name: Run Flake8
	run: \|
	flake8 --config=.flake8 --count --statistics --show-source --jobs=$(nproc) .

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