build: update blacken-docs dependency #4

	name: deploy

	on:
	push:
	branches:
	- main

	jobs:
	deploy:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]
	python-version: [3.9]
	steps:
	- name: Check out repository
	uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	id: setup-python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Load cached Poetry installation
	id: cached-poetry
	uses: actions/cache@v3
	with:
	path: ~/.local # the path depends on the OS
	key: poetry-1 # increment to reset cache
	- name: Install Poetry
	if: steps.cached-poetry.outputs.cache-hit != 'true'
	uses: snok/install-poetry@v1
	- name: Load cached venv
	id: cached-poetry-dependencies
	uses: actions/cache@v3
	with:
	path: .venv
	key: venv-${{ hashFiles('**/poetry.lock') }}
	- name: Install dependencies
	run: \|
	poetry config virtualenvs.create true
	poetry config virtualenvs.in-project true
	poetry install --no-interaction
	- name: Build book
	run: \|
	poetry run jupyter-book build book
	- name: GitHub Pages action
	uses: peaceiris/[email protected]
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: book/_build/html
	publish_branch: gh-pages

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