Clean up async code #929

	name: Screenshots

	on:
	workflow_dispatch:
	pull_request:
	branches:
	- main

	jobs:
	screenshots:
	name: Regenerate screenshot
	timeout-minutes: 10
	runs-on: 'ubuntu-latest'
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	- name: Install llvmpipe and lavapipe for offscreen canvas
	run: \|
	sudo apt-get update -y -qq
	sudo add-apt-repository ppa:oibaf/graphics-drivers -y
	sudo apt-get update -y -qq
	sudo apt install -y libegl1-mesa-dev libgl1-mesa-dri libxcb-xfixes0-dev mesa-vulkan-drivers
	- name: Install dev dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -U -e .[tests,examples]
	- name: Regenerate screenshots
	run: \|
	pytest -v --regenerate-screenshots -k test_examples_screenshots examples
	- uses: actions/upload-artifact@v4
	if: always()
	with:
	name: screenshots
	path: examples/screenshots

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