Update dev-hato/actions-diff-pr-management action to v1.2.1 #8168

	name: pr-update-readme-sudden-death
	on:
	pull_request:
	types:
	- opened
	- synchronize
	- reopened
	- closed
	push:
	branches:
	- master
	permissions:
	contents: write
	pull-requests: write
	jobs:
	pr-update-readme:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
	if: github.event_name != 'pull_request' \|\| github.event.action != 'closed'
	with:
	# ここでsubmodule持ってくるとdetached headにcommitして死ぬ
	# submodule: 'recursive'
	fetch-depth: 0
	ref: ${{ github.event.pull_request.head.sha }}
	- if: github.event_name != 'pull_request' \|\| github.event.action != 'closed'
	run: sed -i -e "s/Python [0-9.]*/Python $(cat .python-version)/g" README.md
	- uses: dev-hato/actions-diff-pr-management@8d475e5bc78f61c40024d4859b79134b66f788d2 # v1.2.1
	with:
	github-token: ${{secrets.GITHUB_TOKEN}}
	branch-name-prefix: readme
	pr-title-prefix: READMEの記述を直してあげたよ！
	concurrency:
	group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.ref }}
	cancel-in-progress: true

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