Mergify: Automate the merge of pull request created by dependabot

[zhan9san]

Would it be possible to try mergify to automate the merge of pull request created by dependabot?

pull_request_rules:
  - name: automatic merge for Dependabot pull requests
    conditions:
      - author~=^dependabot(|-preview)\[bot\]$
      - check-success=xxx
    actions:
      merge:
        method: squash

Reference: https://docs.mergify.com/examples/#bots

[zhan9san]

@ssbarnea
Do you have concerns about this tool?

I'd like to implement it if you don't mind.