Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/fad323b41db4
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #15452 from brunovilar/master

Bug 960955 - Remove "R$" as alternative currency from all non-portuguese-BR keyboard layout, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/0f7b6c97148a
Author: Bruno Vilar <brunovilar@gmail.com>
Desc: Bug 960955 - Remove "R$" as alternative currency from all non-portuguese-BR keyboard layout
Bumping manifests a=b2g-bump