dependabot-auto-approve.yml

# Automatically approves pull requests if:
#   1. The PR was opened by Dependabot
#   2. The dependency's semantic versioning change is either minor or patch (not major)
name: Dependabot auto-approve
on: pull_request_target

permissions:
  pull-requests: write
  contents: write

jobs:
  dependabot:
    runs-on: ubuntu-latest
    if: ${{ github.actor == 'dependabot[bot]' }}
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
        with:
          disable-sudo: true
          egress-policy: block
          allowed-endpoints: >
            api.github.com:443
      - name: Dependabot metadata
        id: dependabot-metadata
        uses: dependabot/fetch-metadata@dbb049abf0d677abbd7f7eee0375145b417fdd34 # v2.2.0
      - name: Approve a PR if dependency semver changes are minor or patch
        if: ${{ contains(fromJson('["version-update:semver-patch", "version-update:semver-minor"]'), steps.dependabot-metadata.outputs.update-type) }}
        run: gh pr review --approve "$PR_URL"
        env:
          PR_URL: ${{ github.event.pull_request.html_url }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - name: Enable auto-merge if dependency semver changes are minor or patch
        if: ${{ contains(fromJson('["version-update:semver-patch", "version-update:semver-minor"]'), steps.dependabot-metadata.outputs.update-type) }}
        run: |
          echo "Enabling auto-merge for Dependabot $UPDATE_TYPE"
          gh pr merge --auto --squash "$PR_URL"
        env:
          PR_URL: ${{ github.event.pull_request.html_url }}
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          UPDATE_TYPE: ${{ steps.dependabot-metadata.outputs.update-type }}