Add stale cells (aka single-shot cells) #4507

	name: Pluto backend tests

	# Controls when the action will run. Triggers the workflow on push or pull request
	# events but only for the main branch
	on:
	workflow_dispatch:
	push:
	paths-ignore:
	- "frontend/**"
	- "frontend-bundler/**"
	- "frontend-dist/**"
	- "test/frontend/**"
	- "**.md"
	branches:
	- main
	pull_request:
	paths-ignore:
	- "frontend/**"
	- "frontend-bundler/**"
	- "frontend-dist/**"
	- "test/frontend/**"
	- "**.md"
	branches-ignore:
	- release

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	test:
	runs-on: ${{ matrix.os }}
	timeout-minutes: 50

	strategy:
	# Without setting this, a failing test cancels all others
	fail-fast: false
	matrix:
	# We test quite a lot of versions because we do some OS and version specific things unfortunately
	julia-version: ["1.10", "1.11"] #, "nightly"] # "~1.12.0-0"]
	os: [ubuntu-latest, macOS-latest, windows-latest]

	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v4

	# Makes the `julia` command available
	- uses: julia-actions/setup-julia@v2
	with:
	version: ${{ matrix.julia-version }}
	arch: ${{ runner.arch }}

	- uses: julia-actions/cache@v2

	# 🚗
	- uses: julia-actions/julia-runtest@v1
	with:
	coverage: false

	- uses: actions/upload-artifact@v4
	if: failure()
	with:
	name: test-snapshots-${{ matrix.julia-version }}-${{ matrix.os }}
	path: ${{ github.workspace }}/test/snapshots/*.html

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