GitHub: プルリクエスト時に自動で Assignees を設定する（GitHub Actions）

name: 'Assign'

on:
  pull_request:
    types: [opened]

jobs:
  Assignees:
    if: ${{ github.actor != 'dependabot[bot]' }}
    runs-on: ubuntu-latest
    timeout-minutes: 1
    steps:
      - uses: actions/checkout@master
      - uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            github.rest.issues.addAssignees({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              assignees: `${{ github.actor }}`
            });            

if: ${{ github.actor != 'dependabot[bot]' }}

octokit.rest.issues.addAssignees({
  owner, // required
  repo, // required
  issue_number, // required
  assignees, // optional
});