github: bump actions/checkout from 3 to 4 #36

	name: Build and deploy documentation
	on:
	push:
	branches: [main]
	jobs:
	docs:
	concurrency: ci-${{ github.ref }}
	runs-on: ubuntu-latest
	steps:
	- name: Check out sources
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.11'

	- name: Install dependencies
	run: pip install --upgrade pip tox

	- name: Generate documentation
	run: tox -v -e docs

	- name: Deploy documentation
	uses: JamesIves/github-pages-deploy-action@v4
	with:
	branch: gh-pages
	folder: .tox/docs/tmp/html
	single-commit: true

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