Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/fa83194807e1
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #25237 from mikehenrty/KevinGrandon-bug_1083571_bholley_wip_patch

Bug 1083571 - Remove __exposedProps__ from marionette shims

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https://hg.mozilla.org/integration/gaia-central/rev/f4546793283f
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1083571 - Waive XRays for sms message event

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https://hg.mozilla.org/integration/gaia-central/rev/40dd8297f0c3
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1083571 - Remove __exposedProps__ from marionette shims
Bumping manifests a=b2g-bump