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

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https://hg.mozilla.org/integration/gaia-central/rev/5814ff026554
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #11291 from cctuan/900355

Comment Bug 900355 - [System] Keyboard show unexpectedly after pressing home from PUK ebtering screen

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https://hg.mozilla.org/integration/gaia-central/rev/76008a41ee0d
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 900355 - [System] Keyboard show unexpectedly after pressing home from PUK ebtering screen