Update actions/checkout action to v4 #2170

	name: Linter

	on: [push, pull_request]

	jobs:
	linter:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
	- name: Use Node.js
	uses: actions/setup-node@v3
	- name: Install Dependencies
	run: npm install
	- run: npm run eslint
	- name: Coverage
	run: npx c8 --reporter=lcovonly npm test
	env:
	CI: true
	- name: Coveralls
	uses: coverallsapp/github-action@master
	with:
	github-token: ${{ secrets.GITHUB_TOKEN }}
	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.x'
	- name: Install Dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install curlylint
	- run: curlylint --include .njk layout

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