[CI] Fix MacOS builds: pin v13 image #42

	# Based on https://github.com/denkiwakame/py-tiny-pkg/blob/main/.github/workflows/test.yml

	name: package

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	install-test:
	runs-on: ${{ matrix.os }}
	continue-on-error: true
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest]
	python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
	exclude: # MacOS images starting v14 do not support Python 3.8: https://github.com/actions/runner-images/blob/main/images/macos/macos-14-Readme.md#python
	- python-version: "3.8"
	os: macos-latest
	include:
	- python-version: "3.8"
	os: macos-13
	max-parallel: 3
	name: Python ${{ matrix.python-version }} on ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v4
	- name: setup-python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	architecture: "x64"
	- name: confirm pip version
	run: pip --version
	- name: installation
	run: pip install .[dev]
	- name: test
	run: python -m pytest --cov
	editable-install-test:
	runs-on: ${{ matrix.os }}
	continue-on-error: true
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest]
	python-version: ["3.9"]
	max-parallel: 3
	name: Python ${{ matrix.python-version }} on ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v4
	- name: setup-python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	architecture: "x64"
	- name: confirm pip version
	run: pip --version
	- name: installation
	run: pip install -e .[dev]
	- name: test
	run: python -m pytest --cov

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