[Development] Maintainer & Approver update

[Knoll Lars]

Hi,

Quite a bit more then the required time has passed for the
Maintainer/Approver nominations from December and January. So I’d like to
congratulate Yoann, Paul and Simon to their new maintainer roles, and
Tony, Simo, Matti, Akseli, Jani to becoming Approvers.

I’ve updated Jira, Gerrit and the Maintainer wiki page to reflect this.

Cheers,
Lars