Bump express from 4.17.1 to 4.19.2 in /frontend #330

	# This workflow will upload a Python Package using Twine when a release is created
	# For more information see: https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions#publishing-to-package-registries

	name: Build and upload Python package

	on:
	release:
	types: [published]
	pull_request:

	jobs:
	deploy:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- name: Use Node.js 12.x
	uses: actions/setup-node@v1
	with:
	node-version: 12.x
	- name: Build frontend
	run: \|
	cd frontend
	npm install -g 'yarn@<2'
	yarn
	yarn build
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: '3.x'
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install build
	- name: Build package
	run: python -m build
	- name: 'Publish package'
	uses: pypa/gh-action-pypi-publish@27b31702a0e7fc50959f5ad993c78deac1bdfc29
	with:
	user: __token__
	password: ${{ secrets.PYPI_API_TOKEN }}
	if: ${{ startsWith(github.ref, 'refs/tags') }}

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