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

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https://hg.mozilla.org/integration/gaia-central/rev/9eb852236e31
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Merge pull request #25339 from Cwiiis/bug1084290-drag-item-to-collapsed-group

Bug 1084290 - Allow dragging an icon into a collapsed group. r=kgrandon,crdlc

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https://hg.mozilla.org/integration/gaia-central/rev/9d8453c51591
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 1084290 - Add a marionette test for dragging an icon into a collapsed group. r=crdlc,kgrandon

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https://hg.mozilla.org/integration/gaia-central/rev/5c7e87e2831b
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 1084290 - Allow dragging an icon into a collapsed group. r=kgrandon,crdlc
Bumping manifests a=b2g-bump