Update mysqlclient dependency.
Update mysqlclient dependency.

* Add gnupg

akatsoulas/mozmoderator,johngian/mozmoderator,johngian/mozmoderator,mozilla/mozmoderator,akatsoulas/mozmoderator,mozilla/mozmoderator,mozilla/mozmoderator,akatsoulas/mozmoderator,johngian/mozmoderator,johngian/mozmoderator