should we replace serum with openbook now?

[KirillLykov]

Just noticed that mango depends on serum and probably it is good to replace with openbook.
For example: https://github.com/blockworks-foundation/mango-v3/blob/main/program/Cargo.toml#L27

[mschneider]

I think it's fine, because it's linking our own fork of the repo.