Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/3afafc4de76d
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #20333 from timdream/input-manage-transition3

Bug 1022475 - Organizing keyboard transition management to another script, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/f84eca6faa30
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1022475 - (Part VI) Fix Python tests

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https://hg.mozilla.org/integration/gaia-central/rev/be05f1741c95
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1022475 - (Part III) Fix JS marionette tests

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https://hg.mozilla.org/integration/gaia-central/rev/c108b0b8aaf5
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1022475 - (Part II) Let KeyboardManager use it

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https://hg.mozilla.org/integration/gaia-central/rev/eed883d2847f
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1022475 - (Part I) Implement InputAppsTransitionManager
Bumping manifests a=b2g-bump