Bump actions/download-artifact from 3 to 4 #120

	name: Python
	on:
	push:
	branches: [main]
	pull_request:

	jobs:
	tests:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	python-version: ["3.8", "3.9"]
	os: [ubuntu-latest, windows-latest, macos-latest]
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: true
	fetch-depth: 0
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- uses: ilammy/msvc-dev-cmd@v1
	- name: Install dependencies
	run: \|
	python -m pip install -U pip
	python -m pip install -e ".[test]"
	env:
	DISTUTILS_USE_SDK: 1
	MSSdk: 1
	- name: Run the unit tests
	run: python -m pytest --cov celerite tests
	- name: Coveralls
	if: startsWith(matrix.os, 'ubuntu')
	uses: AndreMiras/coveralls-python-action@v20201129
	with:
	parallel: true
	flag-name: Unit Tests

	coverage:
	needs: [tests]
	runs-on: ubuntu-latest
	steps:
	- name: Coveralls Finished
	uses: AndreMiras/coveralls-python-action@v20201129
	with:
	parallel-finished: true

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