chg: Use proper GHA for cloning #139

	name: Python application - MyPy

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.8', '3.9', '3.10']
	name: Python ${{ matrix.python-version }} sample

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

	- name: Install poetry
	run: \|
	python -m pip install --upgrade pip poetry
	poetry install --with dev

	- name: Test with MyPy
	run: \|
	poetry run mypy .

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