[Development] Nominating Janne Anttila as Approver

[Rohan McGovern]

I hereby nominate Janne Anttila as an approver.

Janne has a long history with Qt, going back (at least?) to the initial
Qt for S60 port in 2008.  In the past several years, Janne has contributed
many fixes to all platforms (especially, it seems, those platforms which
nobody else likes to work on :)

I count over 500 commits in Qt authored or reviewed by Janne.

Recently, Janne has also been leading the creation of Digia's new test farm
to be used in the Qt Project CI system.

See Janne's dashboard and recently merged patches for further evidence
of his many contributions:

  https://codereview.qt-project.org/#dashboard,1000971
  https://codereview.qt-project.org/#q,owner:janne.anttila%2540digia.com+status:merged,n,z