CI: Use ubuntu-22.04 to support Python 3.7 #687

	name: Documentation

	on:
	workflow_dispatch:
	pull_request: ~
	push:
	branches:
	- main
	schedule:
	- cron: '0 7 * * *'

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	documentation:

	name: Run link checker
	runs-on: ubuntu-latest

	steps:
	- name: Acquire sources
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	cache: 'pip'
	cache-dependency-path: 'pyproject.toml'

	- name: Build docs
	run: \|
	cd docs && make check

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