Bumping gaia.json for 7 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/5e2908842bfd
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #22006 from weigao123/bug1039957-master

Bug 1039957 - [master] Make only check box hide when FDN enabled. r=Arthur.

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https://hg.mozilla.org/integration/gaia-central/rev/d77fea977f3d
Author: wei.gao <wei.gao@spreadtrum.com>
Desc: Bug 1039957 - [master] Make only check box hide when FDN enabled. r=Arthur.

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https://hg.mozilla.org/integration/gaia-central/rev/bebca7e54ced
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #22007 from timdream/keyboard-app

Bug 1041411 - Create KeyboardApp and replace fakeAppObject, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/aeabe2cebaf3
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1041411 - (Part IV) Move IMEngineSettings handling to InputMethodManager

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https://hg.mozilla.org/integration/gaia-central/rev/e3bacc15a568
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1041411 - (Part III) Create KeyboardApp and replace fakeAppObject

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https://hg.mozilla.org/integration/gaia-central/rev/db145243fdc5
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1041411 - (Part II) Remove global variables of comp instances

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https://hg.mozilla.org/integration/gaia-central/rev/9e54ec3034a6
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1041411 - (Part I) Move some methods from fakeAppObject to InputMethodGlue
Bumping manifests a=b2g-bump