Bump express from 4.18.1 to 4.21.2 #41

	name: Check documentation freshness

	on: [push]

	env:
	NODE_VERSION: 16.x

	jobs:
	doccheck:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: Use Node.js ${{ env.NODE_VERSION }}
	uses: actions/setup-node@v1
	with:
	node-version: ${{ env.NODE_VERSION }}

	- name: Install dependencies
	run: npm ci

	- name: Try to generate docs
	run: npm run docs

	- name: Check for uncommitted doc files
	# Returns 1 if there are uncomitted files in docs/
	run: git diff --exit-code docs

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