Bump actions/setup-node from 3 to 4 #7898

	name: mixin

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

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Go
	uses: actions/setup-go@v3
	with:
	go-version: 1.21.x

	- name: Generate
	run: make examples

	- name: Check
	run: make check-examples

	lint:
	runs-on: ubuntu-latest
	name: Linters (Static Analysis) for Jsonnet (mixin)
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Install Go
	uses: actions/setup-go@v3
	with:
	go-version: 1.21.x

	- name: Format
	run: \|
	make jsonnet-format
	git diff --exit-code

	- name: Linting
	run: make jsonnet-lint

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