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

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https://hg.mozilla.org/integration/gaia-central/rev/f0be225d0cd9
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #11630 from cctuan/907094

Bug 907094 - [HD][Gallery] 1px blur around thumbnails' border

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https://hg.mozilla.org/integration/gaia-central/rev/60c1ad643553
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 907094 - [HD][Gallery] 1px blur around thumbnails' border