Bump actions/upload-artifact from 3 to 4 #4690

	name: Check documentation
	on: [push, pull_request]
	jobs:
	docs:
	name: Build documentation & check links
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/[email protected]
	with:
	python-version: "3.8"
	- run: \|
	pip install --constraint=.github/workflows/constraints.txt pip
	pip install --constraint=.github/workflows/constraints.txt nox
	- name: Build documentation
	run: nox --force-color --session=docs
	- uses: actions/upload-artifact@v4
	with:
	name: docs
	path: docs/_build
	- name: Check links
	run: nox --force-color --session=linkcheck

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