py: widen to python 3.9 #35

	name: Build

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	pytest:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [ '3.9', '3.10', '3.11', '3.12' ]
	steps:
	- name: Checkout repository
	uses: actions/checkout@v3
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install Poetry
	run: \|
	pipx install poetry
	- name: Install dependencies
	run: \|
	make install
	- name: Run tests
	run: \|
	make test
	- name: Run mypy
	run: \|
	make mypy
	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.9'
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install ruff
	- name: Run Ruff
	run: \|
	ruff check --config=pyproject.toml --output-format=github .

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