yaml: fix indentation and use yamllint in CI #1803

	name: gitlint

	on:
	pull_request:

	workflow_dispatch:

	jobs:
	gitlint:
	runs-on: ubuntu-latest

	container:
	image: jorisroovers/gitlint:0.19.1

	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Run gitlint
	run: \|
	git config --global --add safe.directory $GITHUB_WORKSPACE
	gitlint --commits origin/$GITHUB_BASE_REF..

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