re-enable vulkan testing #1404

	name: Buildbot Validations
	on: [ push, pull_request ]
	jobs:
	test:
	name: Check buildbot config on Python ${{ matrix.python-version }}
	# TODO: should be ubuntu-latest, but actions/setup-python doesn't work with ubuntu 22 just yet
	runs-on: ubuntu-20.04

	strategy:
	matrix:
	python-version: [ 3.8, 3.9, "3.10", 3.11 ]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/[email protected]
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install importlib
	python -m pip install importlib.metadata
	pip install -r requirements.txt
	- name: Check config
	run: \|
	cd master
	echo "$GITHUB_TOKEN" > github_token.txt
	cp github_token.txt buildbot_www_pass.txt
	cp github_token.txt halide_bb_pass.txt
	cp github_token.txt webhook_token.txt
	buildbot checkconfig

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