chore: add warning on valid output keys #1217

	name: Matrix Test

	on:
	workflow_dispatch:
	pull_request:
	branches:
	- main

	jobs:
	changed-files:
	name: Get changes
	runs-on: ubuntu-latest
	outputs:
	matrix: ${{ steps.set-matrix.outputs.matrix }}
	steps:
	- name: Checkout
	uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
	with:
	fetch-depth: 0
	- name: Get changed files
	id: changed-files
	uses: ./
	with:
	json: true
	quotepath: false
	- name: List all changed files
	run: echo '${{ steps.changed-files.outputs.all_changed_files }}'
	- id: set-matrix
	run: echo "matrix={\"files\":${{ steps.changed-files.outputs.all_changed_files }}}" >> "$GITHUB_OUTPUT"

	matrix-job:
	name: Run Matrix Job
	runs-on: ubuntu-latest
	needs: [changed-files]
	strategy:
	matrix: ${{ fromJSON(needs.changed-files.outputs.matrix) }}
	max-parallel: 4
	fail-fast: false
	steps:
	- name: Checkout
	uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
	- name: Test
	run: \|
	echo ${{ matrix.files }}

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