wip: c1 v2 #3

	# # This workflow would make sure that there are some changes on CHANGELOG.md or
	# # the label "no-need-update-changelog" is tagged on the PR.

	# name: "Must Update CHANGELOG"

	# on:
	# pull_request:
	# types:
	# - opened
	# - synchronize
	# - reopened
	# - labeled
	# - unlabeled
	# branches:
	# - master
	# - release-*

	# permissions: read-all

	# jobs:
	# must-update-changelog:
	# name: "Must Update CHANGELOG"
	# runs-on: "ubuntu-20.04"
	# env:
	# LABEL_EXISTS: ${{ contains(github.event.pull_request.labels.*.name, 'no-need-update-changelog') }}
	# steps:
	# - name: "Skip if label exists"
	# id: "skip-if-label-exists"
	# run: \|
	# if [ "${LABEL_EXISTS}" = "true" ] ; then
	# echo "no-need-update-changelog exists, skipping this check"
	# exit 0
	# fi
	# - name: "Collect changes"
	# id: "collect-changes"
	# if: ${{ ! fromJSON(env.LABEL_EXISTS) }}
	# uses: dorny/paths-filter@v2
	# with:
	# filters: \|
	# changelog:
	# - CHANGELOG.md
	# - name: "Make sure CHANGELOG.md is updated"
	# id: "check-changelog"
	# if: ${{ ! fromJSON(env.LABEL_EXISTS) }}
	# env:
	# CHANGELOG_UPDATED: ${{ steps.collect-changes.outputs.changelog }}
	# run: \|
	# if [ "${CHANGELOG_UPDATED}" = "true" ] ; then
	# echo "CHANGELOG.md is updated"
	# else
	# echo "CHANGELOG.md is not updated"
	# exit 1
	# fi

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