testing/ocaml-*: bring the rest of the OCaml aports up to date, and bring utop back from unmaintained
Here it is, the big OCaml aports upgrade.
Most of the aports from !34220 (closed) are included, with the exception of, I think, coq, reason and some ppx libraries.
I'll see what else I've left out and close !34220 (closed) soon.
Some highlights of this MR are: cmdliner, ctypes, dune-configurator, labltk, lwt, and utop.
Edited by rubicon