Bumping gaia.json for 2 gaia-central revision(s)

========

https://hg.mozilla.org/integration/gaia-central/rev/00c39a36e9b2
Author: Gareth Aye <gaye@mozilla.com>
Desc: Merge pull request #11564 from lightsofapollo/travis-mc

Bug 905875 - Switch unit tests to mozilla-central

========

https://hg.mozilla.org/integration/gaia-central/rev/46c69dda00db
Author: James Lal <james@lightsofapollo.com>
Desc: Bug 905875- Switch unit tests to mozilla-central