Changed GH to use ubuntu 19 - ubuntu-lastest not working #10

	name: deploy-book

	# Only run this when the main branch changes
	on:
	push:
	branches:
	- master
	# If your git repository has the Jupyter Book within some-subfolder next to
	# unrelated files, you can make this run only if a file within that specific
	# folder has been modified.
	#
	# paths:
	# - some-subfolder/**

	# This job installs dependencies, builds the book, and pushes it to `gh-pages`
	jobs:
	deploy-book:
	runs-on: ubuntu-18.04
	steps:
	- uses: actions/checkout@v3

	# Install dependencies
	- name: Set up Python 3.11
	uses: actions/setup-python@v3
	with:
	python-version: 3.11

	- name: Install dependencies
	run: \|
	pip install --upgrade setuptools
	pip install --upgrade jupyter-book sphinxcontrib-bibtex

	# Build the book
	- name: Build the book
	run: \|
	jupyter-book build .

	# Push the book's HTML to github-pages
	- name: GitHub Pages action
	uses: peaceiris/actions-gh-pages@v3
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./_build/html

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