Support for on: pull_request_target

[mercuriete]

when this plugin is triggered with the following yaml:

name: auto-merge

on:
  pull_request_target:

jobs:
  auto-merge:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: ahmadnassri/action-dependabot-auto-merge@v2.3
        with:
          github-token: ${{ secrets.token }}
          target: minor

it shows the following output:

Error: action triggered outside of a pull_request

Please give support for pull_request_target.

Motivation: actions triggered from a dependabot PR are not using secrets unless you change pull_request to pull_request_target https://github.blog/changelog/2021-02-19-github-actions-workflows-triggered-by-dependabot-prs-will-run-with-read-only-permissions/

(this only work for GITHUB_TOKEN and not for personal access token)

[ahmadnassri]

closed in https://github.com/ahmadnassri/action-dependabot-auto-merge/commit/2aef6bbf0c786ba7411c31913536c255f97d9323