Add: Unlock Activity #636

	name: Compatibility Validation

	# To test with `act` on Apple silicon:
	# act -s GITHUB_TOKEN="$(gh auth token)" --container-architecture linux/amd64 -W .github/workflows/validate-compatibility.yml

	on:
	push:
	branches: [ "main" ]
	pull_request:
	branches: [ "main" ]

	jobs:
	validate:
	name: Validate that changes are backwards compatible with the last stable release
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository content
	uses: actions/checkout@v4

	- name: Setup python
	uses: actions/setup-python@v4
	with:
	python-version: '3.11'

	- name: Install validator
	run: python -m pip install "ocsf-lib>=${{ vars.COMPATIBILITY_VALIDATOR_VERSION \|\| '0.8,<0.9' }}"

	- name: Run validator
	shell: bash
	run: export FORCE_COLOR=1 && python -m ocsf.validate.compatibility ${{ vars.LATEST_STABLE \|\| '1.3.0' }} .
	# with:
	#repository: ocsf/ocsf-schema
	#path: schema

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