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

========

https://hg.mozilla.org/integration/gaia-central/rev/f299a464ccbb
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #14639 from crh0716/913326

Bug 913326 - Set voice privacy mode at startup r=alive, jaoo

========

https://hg.mozilla.org/integration/gaia-central/rev/43f6981acc53
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 913326 - Set voice privacy mode at startup