Tezt 4.1.0

Companion MR: opam-repository!511 (merged)

What

Upgrade all external dependencies, in particular Tezt.

Why

To benefit from the improvements from the latest release of Tezt, namely 4.1.0. In particular, it

How

By following the instructions. More or less.

Some variables had to be renamed because of a semi-breaking change in Tezt.

See the changelog of Tezt.

Manually testing the MR

The CI should pass. Note that I tagged the MR with ci--run-all-tests to check that all Tezt tests still pass.

Checklist

• 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