update cibuildwheel to 2.20.0 #264

	name: Run tests
	on:
	push:
	branches: [main]
	pull_request:
	create:

	jobs:
	test:
	strategy:
	matrix:
	os: ["ubuntu-latest", "windows-latest", "macos-latest"]
	py: ["3.13-dev", "3.12", "3.11", "3.10", "3.9", "3.8"]

	runs-on: ${{ matrix.os }}
	name: Run test with Python ${{ matrix.py }} on ${{ matrix.os }}

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.py }}
	allow-prereleases: true
	cache: "pip"

	- name: Build
	shell: bash
	run: \|
	pip install -r requirements.txt pytest
	make cython
	pip install .

	- name: Test (C extension)
	shell: bash
	run: \|
	pytest -v test

	- name: Test (pure Python fallback)
	shell: bash
	run: \|
	MSGPACK_PUREPYTHON=1 pytest -v test

	- name: build packages
	shell: bash
	run: \|
	pip install build
	python -m build

	- name: upload packages
	uses: actions/upload-artifact@v4
	with:
	name: dist-${{ matrix.os }}-${{ matrix.py }}
	path: dist

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