fix: Use `Union` to make typeguard happy #403

	name: Docs

	on:
	push:
	branches: ["main"]

	permissions:
	contents: read
	pages: write
	id-token: write

	env:
	SETUPTOOLS_ENABLE_FEATURES: legacy-editable

	jobs:
	docs:
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	with:
	lfs: 'false'
	submodules: 'recursive'
	ssh-key: ${{ secrets.git_ssh_key }}
	- name: Setup Python
	uses: actions/setup-python@v4
	with:
	python-version: 3.9.14
	architecture: x64
	cache: 'pip'
	- name: Install Python dependencies
	run: pip install -e '.[modules, docs]'
	- name: Build Docs
	run: cd ./docs; make html
	- name: Upload artifact
	uses: actions/upload-pages-artifact@v1
	with:
	path: './docs/build/html'
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@main

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