Enable GH merge queues

[wizenink]

We should enable merge queues, to ensure that main branch is always up-to-date in a PR branch. In busy environments, a PR can quickly drift out-of-sync from the main branch while it's being reviewed. Merge queues would allow us to auto-ff the branch to the required HEAD and prevent incompatible changes.
We could use other options like Bulldozer or Bors, but I consider merge queues more than enough for our usecase

[keko950]

meh

[jorgeteixe]

Hey @keko950, reminder that we follow the Code of Conduct and try to keep comments constructive. If you have feedback or a different opinion, feel free to share it with some context.

Just “meh” doesn’t help move things forward 🙂 thanks!