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

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https://hg.mozilla.org/integration/gaia-central/rev/523866b511f5
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #11472 from cctuan/901458

Bug 901458 - [Buri][Settings]The interface display abnormal when input PIN code

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https://hg.mozilla.org/integration/gaia-central/rev/f8b32754a7b9
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 901458 - [Buri][Settings]The interface display abnormal when input PIN code