feat: Switchのchildrenを必須にし、label要素として紐づけることでa11yを改善する #12234

	name: PR Title Check

	on:
	pull_request:
	types: [opened, edited, synchronize, reopened]

	jobs:
	conventional_commits:
	runs-on: ubuntu-latest
	steps:
	- name: check title
	env:
	PR_TITLE: ${{ github.event.pull_request.title }}
	run: \|
	regex="^(feat\|fix\|docs\|chore\|style\|refactor\|perf\|test)!?($[^$]+\))?:[[:space:]].+"
	if [[ "$PR_TITLE" =~ $regex ]]; then
	echo OK
	else
	echo "::error::Pull Request のタイトルが Conventional Commits 形式にマッチしません"
	exit 1
	fi

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