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

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https://hg.mozilla.org/integration/gaia-central/rev/7bce6f1246c0
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #25252 from timdream/keyboard-state-queue2

Bug 1083638 - Control layout loading/unloading in an AbortablePromiseQueue, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/89629dd03c53
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1083638 - Follow-up, marionette test for switch between inputs in the same frame

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https://hg.mozilla.org/integration/gaia-central/rev/e630a253a2b6
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1083638 - Control layout loading/unloading in an AbortablePromiseQueue

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https://hg.mozilla.org/integration/gaia-central/rev/366f5299cb8f
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #25207 from cctuan/1075353

Bug 1075353 - 1st inline activity is not killed before the second inline activity comes.

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https://hg.mozilla.org/integration/gaia-central/rev/42928a1343c4
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 1075353 - 1st inline activity is not killed before the second inline activity comes.
Bumping manifests a=b2g-bump