build(deps): bump docker/setup-buildx-action from 1 to 3 #880

	name: Build Backend
	on:
	pull_request:
	paths:
	- 'backend/cmd/**'
	- 'backend/pkg/**'
	- 'backend/tools/**'
	- 'backend/test/**'
	- 'backend/go.mod'
	- 'backend/go.sum'
	- 'updaters/**'
	- '.github/**'
	- Makefile

	jobs:

	build:
	name: Lint & Build
	runs-on: ubuntu-20.04

	steps:

	- name: Set up Go 1.19
	uses: actions/setup-go@v1
	with:
	go-version: 1.19.x
	id: go

	- name: Check out code
	uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

	- name: Build, Lint & Check
	run: \|
	make all ci
	working-directory: backend

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