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

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https://hg.mozilla.org/integration/gaia-central/rev/330c37405509
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #11768 from cctuan/909614

Bug 909614 - [Flatfish][System] fix problem of date_picker layout

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https://hg.mozilla.org/integration/gaia-central/rev/3d88094eac3c
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 909614 - [Flatfish][System] fix problem of date_picker layout