Update run-legacy-validate-for-contribution.yml #1

	name: Protect Infrastructure Files

	on:
	pull_request:
	types:
	- opened
	- synchronize

	jobs:
	protect-infra-files:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	fetch-depth: 100 # to speed up. changed-files will fetch more if necessary

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.x"

	- name: Get changed files
	id: changed-files
	uses: tj-actions/changed-files@v44 # disable-secrets-detection
	with:
	files: \|
	.gitlab/ci/.gitlab-ci.yml

	- name: Prevent changing protected files
	if: steps.changed-files.outputs.any_changed == 'true'
	env:
	FILES: ${{ steps.changed-files.outputs.all_changed_files }}
	run: \|
	for file in ${FILES}; do
	echo "::error file=$file,line=1,endLine=1,title=Protected file modified::This file should not be changed in master.%0AIf you are sure it's necessary, ask for a force merge and explain the rationale."
	done
	exit 1

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