Backport !14231 to v20

What

See !14231 (merged) (3 commits that reverted a change that was never pushed to v20-release have been omitted)

This commit: !14231 (8ed93f94) touches a file that is not present in v20-release I had to add a commit from a previous MR that added the proper regexps for Irmin/Brassaia errors

Why

How

Manually testing the MR

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