test: add static application security testing #1413

	name: Lint rq

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	permissions:
	contents: read

	jobs:
	lint:
	name: Lint
	runs-on: ubuntu-20.04

	steps:
	- uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v4.7.1
	with:
	python-version: 3.8

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install black ruff

	- name: Lint with black
	run: \|
	black --check --skip-string-normalization --line-length 120 rq tests

	- name: Lint with ruff
	run: \|
	# stop the build if there are Python syntax errors.
	ruff check --show-source rq tests

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