Use v4 of the checkout action. v3 will be deprecated. #100

	---
	#
	# Ansible managed
	#

	on:
	- push

	name: Ansible Graphviz

	jobs:
	build:
	runs-on: ubuntu-20.04
	permissions:
	contents: write
	steps:
	- name: checkout
	uses: actions/checkout@v4
	with:
	path: ${{ github.repository }}
	- name: create png
	uses: robertdebock/[email protected]
	- name: Commit files
	run: \|
	cd ${{ github.repository }}
	git config --local user.email "github-actions[bot]@users.noreply.github.com"
	git config --local user.name "github-actions[bot]"
	git add requirements.dot requirements.png
	git commit -m "Add generated files"
	- name: save to png branch
	uses: ad-m/github-push-action@master
	with:
	directory: ${{ github.repository }}
	force: true
	branch: png

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