Feature request: Bot solves merge conflicts via `rebase` or `merge`

Copied from [here](https://github.com/all-contributors/app/issues/286#issuecomment-1735490352):

> I forgot to instruct the bot to create contributor PRs for the past months so today I went through a lot of closed issues of my project and instructed the bot to create PRs. Unfortunately after merging the first PR, of course I had merge conflicts in the second PR. I was hoping that the bot has a `merge` or `rebase` command or automatically detects and fixes these merge conflicts. So this feature would be really appreciated. Many thanks and thank you for your great work 🙏🏼