Update default PHP version #167

	name: Check `config.yml`

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- name: Check out repo
	uses: actions/checkout@v2
	- name: Read node version
	run: echo "NVMRC=$(cat .nvmrc)" >> $GITHUB_ENV
	- name: Use Node.js ${{ env.NVMRC }}
	uses: actions/setup-node@v2
	with:
	node-version: ${{ env.NVMRC }}
	- name: Install dependencies
	run: npm ci
	- name: Build config.yml
	run: \|
	npm run format
	npm run build
	- name: Confirm committed config.yml matches built version
	run: git diff --exit-code

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