feat: run codebuild ci if label added to pr #1155

	name: Changelog verification

	on:
	pull_request:
	types: [ opened, synchronize, reopened, labeled, unlabeled ]
	branches: [ main ]

	jobs:
	changelog-verification:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Check for changelog entry
	if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-changelog') }}
	run: \|
	git fetch origin ${{ github.base_ref }} --depth 1 && \
	git diff remotes/origin/${{ github.base_ref }} --name-only \| grep -P "\.changes/[0-9a-f-]+\.json"
	- name: Error message
	if: ${{ failure() }}
	run: \|
	echo "::error ::No new/updated changelog entry found in /.changes directory. Please either:"
	echo "::error ::* Add a changelog entry (see CONTRIBUTING.md for instructions) –or–"
	echo "::error ::* Add the 'no-changelog' label to this PR (in rare cases not warranting a changelog entry)"
	exit 1

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