Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/d4a002929102
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #25580 from etiennesegonzac/bug-1071114

Bug 1071114 - Tweaking the rocketbar collapsing transition. r=cwiis

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https://hg.mozilla.org/integration/gaia-central/rev/32a93f5234b1
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 1071114 - Tweaking the rocketbar collapsing transition.
Bumping manifests a=b2g-bump