Require Python 3.9 and test on more OSs #4

	name: CI

	on: [push]

	jobs:
	lint:
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, windows-latest, macos-latest]
	py_version: ["3.9", "3.10", "3.11"]
	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.py_version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.py_version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade flit
	flit install --deps=all
	- name: Type check
	run: mypy heroku_audit stubs
	- name: Format
	run: black --check heroku_audit stubs
	- name: lint
	run: ruff check heroku_audit stubs

	build:
	permissions:
	id-token: write # IMPORTANT: this permission is mandatory for trusted publishing
	runs-on: ubuntu-latest
	needs: lint
	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 0
	- name: Publish to PyPi
	if: ${{ github.ref_type == 'tag' }}
	uses: pypa/gh-action-pypi-publish@release/v1
	with:
	print_hash: true

Provide feedback