Bump actions/checkout from 3 to 4 #13

	name: Tests
	on:
	push:
	branches:
	- main
	- '*.x'
	paths-ignore:
	- 'docs/**'
	- '*.md'
	- '*.rst'
	pull_request:
	branches:
	- main
	- '*.x'
	paths-ignore:
	- 'docs/**'
	- '*.md'
	- '*.rst'
	jobs:
	tests:
	name: ${{ matrix.name }}
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	include:
	- {name: '3.10', python: '3.10', tox: py310}
	- {name: 'Lowest', python: '3.10', tox: py310-lowest}
	- {name: '3.9', python: '3.9', tox: py39}
	- {name: '3.8', python: '3.8', tox: py38}
	- {name: '3.7', python: '3.7', tox: py37}
	- {name: 'Typing', python: '3.10', os: ubuntu-latest, tox: typing}
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python }}
	cache: 'pip'
	cache-dependency-path: 'pdm.lock'
	- uses: actions/cache@v3
	with:
	path: ~/.cache/pdm
	key: ${{ matrix.python }}-pdm-${{ hashFiles('pdm.lock') }}
	restore-keys: ${{ matrix.python }}-pdm-
	- run: \|
	pip install pdm
	pdm config install.cache true
	pdm sync -dG tox
	- run: pdm run tox -e ${{ matrix.tox }}

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