Bump mysql2 from 2.3.3 to 3.9.4 in /app #344

	name: Build
	on: [push, pull_request]
	jobs:
	build:
	name: Build
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2
	- name: Build
	uses: docker/build-push-action@v3
	with:
	push: false

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