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

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https://hg.mozilla.org/integration/gaia-central/rev/9503adedd499
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Merge pull request #13847 from eeejay/bug-938846

Bug 938846 - [Settings] [Messaging] Fix checkbox regressions from bug #9... r=kaze

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https://hg.mozilla.org/integration/gaia-central/rev/66960195570d
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Bug 938846 - [Settings] [Messaging] Fix checkbox regressions from bug #914892