add news #25

	name: Validate Collections

	on:
	workflow_dispatch:
	push:
	paths:
	- '_/*.md'
	pull_request:
	paths:
	- '_courses/*.md'

	jobs:
	validate:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.12'

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install yamale

	- name: Run course validation
	run: \|
	python src/validate_collections.py

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