Make autorebase less restrictive (#34848)

Summary:
Currently the autorebase feature doesn't work because it fails the `if` validation due to how we distribute permissions.

For now I'm making this action less restricted. We can tweak it if we notice abuse.
Config now is the same as https://github.com/cirrus-actions/rebase

## Changelog

[Internal] - Make autorebase less restrictive

Pull Request resolved: https://github.com/facebook/react-native/pull/34848

Test Plan: Nothing to test

Reviewed By: cipolleschi

Differential Revision: D40022304

Pulled By: cortinico

fbshipit-source-id: 74270b47c61267484c073706fa900f22b3569a94