Bump dompurify and mermaid #1502

	---
	# This is a basic workflow to help you get started with Actions

	name: CI

	# Controls when the action will run.
	# yamllint disable-line rule:truthy
	on:
	# Triggers the workflow on push and
	push:

	# Triggers workflow on pull request events for the main branch
	pull_request:
	branches: [main]

	# Allows you to run this workflow manually from the Actions tab
	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 "build"
	build:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed
	# as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE,
	# so your job can access it
	- uses: actions/checkout@v2

	- name: install
	run: npm install

	- name: build
	run: npm run build:all

	- name: test
	run: npm run test:unit

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