Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/f5eb367288cd
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #18696 from mcav/alarm-refactor

Bug 1001568 - [Clock] Refactor AlarmsDB and Alarm. r=millermedeiros

========

https://hg.mozilla.org/integration/gaia-central/rev/9191a7d7f1f8
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Bug 1001568 - [Clock] Refactor AlarmsDB and Alarm. r=millermedeiros
Bumping manifests a=b2g-bump