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

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https://hg.mozilla.org/integration/gaia-central/rev/91ec5d7cc6c6
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #11973 from alivedise/bugzilla/897283

Bug 897283 - No scroll in input PUK screen, r=alive, a=leo+

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https://hg.mozilla.org/integration/gaia-central/rev/d2b45cdcbe5f
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 897283 - No scroll in input PUK screen