Update poetry and fix type error #18

	name: Code Style

	on: [push, pull_request]

	jobs:
	build:
	name: "Lint Code Base"
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.8
	uses: actions/setup-python@v2
	with:
	python-version: 3.8
	- name: Install and configure Poetry
	uses: snok/install-poetry@v1
	with:
	version: 1.8.2
	virtualenvs-create: true
	- name: Install dependencies
	run: \|
	poetry install --only dev --no-root --no-interaction
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	poetry run flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	poetry run flake8 . --count --max-complexity=10 --max-line-length=88 --statistics
	- name: Check with black
	run: \|
	poetry run black . --check --diff
	- name: Run GitHub super-linter
	uses: docker://github/super-linter:v3
	env:
	VALIDATE_ALL_CODEBASE: true
	VALIDATE_YAML: true
	VALIDATE_JSON: true
	VALIDATE_MD: true
	VALIDATE_BASH: true
	VALIDATE_DOCKER: true
	VALIDATE_GO: true
	VALIDATE_ENV: true

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