Bump actions/cache from 3 to 4 #422

	name: Backport
	on:
	pull_request_target:
	types:
	- closed
	- labeled

	jobs:
	backport:
	runs-on: ubuntu-latest
	permissions:
	contents: write
	pull-requests: write
	name: Backport
	steps:
	- name: GitHub App token
	id: github_app_token
	uses: actions/create-github-app-token@v1
	with:
	app_id: ${{ secrets.APP_ID }}
	private_key: ${{ secrets.APP_PRIVATE_KEY }}

	- name: Backport
	uses: VachaShah/[email protected]
	with:
	github_token: ${{ steps.github_app_token.outputs.token }}
	branch_name: backport/backport-${{ github.event.number }}

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