infra: add PL device testing using a stable PL version #11

	# Workflow template for testing plugins against PennyLane stable

	name: PennyLane Device Test
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	- feature/**


	jobs:
	build:
	runs-on: ubuntu-latest

	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.9", "3.10", "3.11"]

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Maximize build space
	shell: bash
	run: \|
	df -h
	if [ "$RUNNER_OS" != "Windows" ]; then
	sudo rm -rf /usr/share/dotnet &
	sudo rm -rf /usr/local/lib/android &
	sudo rm -rf /opt/ghc &
	sudo rm -rf /usr/local/share/boost
	fi
	df -h
	- name: Install dependencies
	run: \|
	pip install tox
	- name: Check build space
	shell: bash
	run: \|
	df -h
	- name: Run PennyLane device integration tests
	run: \|
	tox -e pennylane-device-tests

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