Bump actions/checkout from 3 to 4 (#19) #18

	name: Lint

	on:
	push:
	branches:
	- builder

	jobs:
	lint:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v4

	- uses: actions/setup-python@v4
	with:
	python-version: '3.x'

	- uses: actions/cache@v3
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('setup.py', 'setup.cfg') }}

	- name: Install lint tools
	run: \|
	python -mpip install -U pip wheel
	pip install -e .[lint]

	- name: Checks
	run: \|
	black --check espurna_nightly_builder
	pylint espurna_nightly_builder

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