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

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https://hg.mozilla.org/integration/gaia-central/rev/3dbea8a3e643
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #11211 from crh0716/896942_master

Bug 896942 - Fix assets r=rexboy

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https://hg.mozilla.org/integration/gaia-central/rev/d3d92c48161e
Author: crh0716 <crh0716@gmail.com>
Desc: Bug 896942 - Fix assets