Bump actions/setup-node from 3 to 4 #61

	name: test

	on:
	push:
	branches:
	- master
	pull_request:
	workflow_dispatch:

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel:
	jobs:
	# This workflow contains a single job called "test":
	test:
	runs-on: ubuntu-latest
	timeout-minutes: 5
	# Steps represent a sequence of tasks that will be executed as part of the job:
	steps:
	# Checkout your repository under $GITHUB_WORKSPACE, so your job can access it:
	- name: Checkout repo
	uses: actions/checkout@v4

	- name: Setup Node.js environment
	uses: actions/setup-node@v4
	with:
	node-version: 'lts/*'

	- name: Install (dev) dependencies
	run: npm install

	- name: Style test
	run: npm run lint

	- name: Build
	run: \|
	mv cylc.tmLanguage.json tmLang_copy.json
	npm run build

	- name: Check grammar file matches build output
	run: diff -Z cylc.tmLanguage.json tmLang_copy.json

	- name: Unit tests
	run: npm test

Provide feedback