ci: tweak and add lint workflow, docs: fix build badge #3

	name: test

	on:
	push:
	branches-ignore:
	- 'dependabot/**'
	pull_request:

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	# https://endoflife.date/python
	# https://github.com/actions/runner-images/blob/main/images/linux/Ubuntu2204-Readme.md#python
	python-version:
	- '3.8'
	- '3.9'
	- '3.10'
	- '3.11'
	- '3.12'
	steps:
	- uses: actions/checkout@v4

	- name: set up python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: install python dependencies
	run: pip install -r requirements.txt

	- name: install python test dependencies
	run: pip install -r requirements-dev.txt

	- name: run tests
	run: py.test -vs tests/

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