Upgrade coq-of-ocaml to the version 2.3.0
Context
In this MR we upgrade coq-of-ocaml (translating the protocol code to Coq); in the hope to have less errors in the CI job running coq-of-ocaml. For now many errors are hidden by a black-list.
Manually testing the MR
The CI job coq:lint should be successful.
Edited by Guillaume Claret