ci(dependabot): improve dependency auto merge #24

	---
	name: auto-merge
	on:
	pull_request:
	permissions:
	contents: write
	pull-requests: write
	jobs:
	check-can-auto-merge:
	if: github.triggering_actor == 'dependabot[bot]'
	name: Check if PR can be auto-merged
	runs-on: ubuntu-latest
	outputs:
	can-auto-merge: ${{ steps.can-auto-merge.outputs.approve }}
	steps:
	- uses: dependabot/[email protected]
	id: dependabot-metadata
	with:
	github-token: ${{ secrets.GITHUB_TOKEN }}
	- if: \|
	steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch' \|\|
	steps.dependabot-metadata.outputs.package-ecosystem == 'github_actions'
	id: can-auto-merge
	run: echo "approve=true" >> $GITHUB_OUTPUT
	auto-merge:
	needs: check-can-auto-merge
	if: needs.check-can-auto-merge.outputs.can-auto-merge == 'true'
	name: Auto merge pull requests
	runs-on: ubuntu-latest
	steps:
	- uses: dependabot/[email protected]
	id: dependabot-metadata
	with:
	github-token: ${{ secrets.GITHUB_TOKEN }}
	- name: Approve Dependabot PR
	run: gh pr review --approve "${PR_URL}"
	env:
	PR_URL: ${{ github.event.pull_request.html_url }}
	# Because we enforce PRs be approved by a code owner, a token from the
	# operations team must be used to approve the PR. This token is from the
	# StatusCake machine account which has been given membership to the
	# operations team.
	GITHUB_TOKEN: ${{ secrets.MACHINE_TOKEN }}
	- name: Enable auto-merge for Dependabot PR
	run: gh pr merge --auto --merge "${PR_URL}"
	env:
	PR_URL: ${{ github.event.pull_request.html_url }}
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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