Context

Merge tezos-rust-libs!13 (merged)
Make a release 1.4 of tezos-rust-libs and publish to ocaml/opam-repository (see this MR)
Update this branch and tezos/opam-repository to use tezos-rust-libs.1.4 (see this MR)

Manually testing the MR

Document the interface of any function added or modified (see the coding guidelines)
Document any change to the user interface, including configuration parameters (see node configuration)
Provide automatic testing (see the testing guide).
For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
Select suitable reviewers using the Reviewers field below.
Select as Assignee the next person who should take action on that MR

Edited Feb 10, 2023 by Raphaël Proust