chore(deps): update actions/checkout action to v4 #1285

	name: JSON Schema Check

	on:
	push:
	pull_request:

	jobs:
	json-schema-check:
	runs-on: ubuntu-22.04
	container: python:3.11-alpine3.16
	steps:
	- uses: actions/checkout@v4
	- name: Test
	run: \|
	pip install jsonschema==4.14.0
	for f in $(find config/ -name '*.json')
	do
	echo "Checking $f"
	jsonschema -i $f config-schema.json
	done

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