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

[svenjacobs]

Copied from here:

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 🙏🏼

[sreichel]

Same here. Now i have 50 PRs with merge conflicts :(