Bump actions/download-artifact from 3 to 4.1.7 in /.github/workflows #1006

	name: REBOUND (ipynb)

	on: [push, pull_request]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.10", "3.11", "3.12"]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install pytest jupyter matplotlib scipy multiprocess
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	- name: Build package
	run: pip install -e .
	- name: Running jupyter notebooks
	run: \|
	cd ipython_examples
	python ipynb2py.py AdvWHFast.ipynb
	python ipynb2py.py Checkpoints.ipynb
	python ipynb2py.py Churyumov-Gerasimenko.ipynb
	python ipynb2py.py CloseEncounters.ipynb
	python ipynb2py.py EscapingParticles.ipynb
	python ipynb2py.py Forces.ipynb
	python ipynb2py.py FourierSpectrum.ipynb
	python ipynb2py.py Horizons.ipynb
	python ipynb2py.py Holmberg.ipynb
	python ipynb2py.py Megno.ipynb
	python ipynb2py.py Resonances_of_Jupiters_moons.ipynb
	python ipynb2py.py VariationalEquations.ipynb
	python ipynb2py.py VariationalEquationsWithChainRule.ipynb
	python ipynb2py.py UniquelyIdentifyingParticlesWithHashes.ipynb
	python ipynb2py.py RemovingParticlesFromSimulation.ipynb
	python ipynb2py.py PoincareMap.ipynb
	python ipynb2py.py OrbitalElements.ipynb
	python ipynb2py.py Testparticles.ipynb
	python ipynb2py.py Units.ipynb
	python ipynb2py.py WHFast.ipynb
	python ipynb2py.py HighOrderSymplectic.ipynb
	python ipynb2py.py TransitTimingVariations.ipynb

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