Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/f60f08f59100
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Bug 1022337 - e.me search results should have rounded icons r=kgrandon
Bumping manifests a=b2g-bump