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

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https://hg.mozilla.org/integration/gaia-central/rev/3ca4f566c83b
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Merge pull request #10506 from fabi1cazenave/simpleLocalize-bug882591

Bug 882591 - l10n.js should expose an asynchronous `localize()' method, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/0e74446a9eec
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Bug 882591 - l10n.js should expose an asynchronous `localize()' method