Improve release process steps in CONTRIBUTING.md #39

	name: Linting check

	on:
	pull_request:
	push:
	branches:
	- main

	jobs:
	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: 'recursive'
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: '3.8'
	- name: Setup poetry
	uses: abatilo/[email protected]
	with:
	poetry-version: 1.3.2
	- name: Install dependencies
	run: poetry install -E crypto
	- name: Lint with flake8
	run: poetry run flake8

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