Bumping gaia.json for 4 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/47a96ce7dd06
Author: Fernando Rodríguez Sela <frsela@tid.es>
Desc: Merge pull request #10695 from frsela/STK/Bug886808

Bug 886808 - [STK] ICC Settings part cleanup, r=kaze

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https://hg.mozilla.org/integration/gaia-central/rev/32c329a4f497
Author: Fernando Rodríguez Sela <frsela@tid.es>
Desc: Settings cleanup

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https://hg.mozilla.org/integration/gaia-central/rev/11371cbe210e
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #10065 from timdream/remove-hvga-splash

Bug 873431 - Remove HVGA splashes being specified as "icons", r=vingtetun

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https://hg.mozilla.org/integration/gaia-central/rev/3cb8f06ceea7
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 873431 - Remove HVGA splashes being specified as "icons"