Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/9d4b4264bbda
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 1040215 - [Messages] Move initSentAudio out of enableSend r=azasypkin

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https://hg.mozilla.org/integration/gaia-central/rev/1d7495d421d1
Author: russnicoletti <rnicoletti@mozilla.com>
Desc: Merge pull request #22002 from russnicoletti/bug-1011772

Bug 1011772 -- [video] delete confirmation is incorrect r=rnicoletti

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https://hg.mozilla.org/integration/gaia-central/rev/b303d0ec7ee9
Author: Russ Nicoletti <rnicoletti@mozilla.com>
Desc: Bug 1011772 -- [video] delete confirmation is incorrect
Bumping manifests a=b2g-bump