[CI] Fix MacOS builds: pin v13 image #47

	# 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 }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, macos-13] # MacOS image v14 does not support Python versions 3.8 & 3.9
	python-version: ["3.8", "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@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 }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, macos-13] # MacOS image v14 does not support Python version 3.8
	python-version: ["3.8"]
	max-parallel: 3
	name: Python ${{ matrix.python-version }} on ${{ matrix.os }} (editable install)
	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 -e .[dev]
	- name: test
	run: python -m pytest --cov

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