Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/843d26659455
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #23655 from timdream/keyboard-rocketbar-miss

Bug 1061439 - Stop JS error by preventing IMEngine from interact with Glue, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/8e5c13336e30
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1061439 - Part III, Stop JS error by preventing IMEngine from interact with Glue

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https://hg.mozilla.org/integration/gaia-central/rev/bf9f8364f251
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1061439 - Part II, properly handle JS error in latin.js promises

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https://hg.mozilla.org/integration/gaia-central/rev/a5ec7173f98c
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1061439 - Part I, Create KeyboardConsole and add log to interactions
Bumping manifests a=b2g-bump