Update to node 20 in tests #18

	name: Tests

	on:

	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	# Allow job to be triggered manually.
	workflow_dispatch:

	# Cancel in-progress jobs when pushing to the same branch.
	concurrency:
	cancel-in-progress: true
	group: ${{ github.workflow }}-${{ github.ref }}

	jobs:

	tests:
	runs-on: ${{ matrix.os }}

	strategy:
	matrix:
	os: [ "ubuntu-latest" ]
	node-version: [ '20' ]

	name: Node.js ${{ matrix.node-version }} on ${{ matrix.os }}
	steps:

	- name: Acquire sources
	uses: actions/checkout@v3

	# https://github.com/actions/setup-node
	- name: Setup Node.js
	uses: actions/setup-node@v3
	with:
	node-version: ${{ matrix.node-version }}
	cache: 'yarn'
	cache-dependency-path: \|
	package.json
	yarn.lock

	- name: Install dependencies
	run: yarn install

	- name: Build package (development)
	run: yarn run build

	- name: Verify package build (development)
	run: ls -alF htdocs/static/assets/*.bundle.js

	- name: Build package (production)
	run: yarn run release

	- name: Verify package build (production)
	run: ls -alF htdocs/static/assets/*.bundle.min.js

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