Retire macos-12 in github actions #178

	# Assorted quality checks for PRs.

	name: Quality checks

	on:
	push:
	branches: [master]
	pull_request:
	branches:
	- '**'

	jobs:

	run_ci:
	runs-on: ubuntu-20.04
	env:
	DEVSTACK_WORKSPACE: /tmp
	SHALLOW_CLONE: 1
	strategy:
	matrix:
	python-version:
	- '3.11'
	fail-fast: false

	steps:
	- uses: actions/checkout@v4
	- name: setup python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: Test Makefile
	run: make selfcheck

	- name: Install Python dependencies
	run: make requirements

	- name: Test that docs build without errors
	run: make docs

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