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

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https://hg.mozilla.org/integration/gaia-central/rev/7074e7efe829
Author: Sam Joch <samuel@guiora.com>
Desc: Merge pull request #11466 from pivanov/bug-903360

Bug 903360 - [HD] Blue time stamp is too small and should be closer to the right edge r=samjoch

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https://hg.mozilla.org/integration/gaia-central/rev/94253782dd92
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 903360 - [HD] Blue time stamp is too small and should be closer to the right edge