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

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https://hg.mozilla.org/integration/gaia-central/rev/efc3dda58bee
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Merge pull request #14937 from EverythingMe/948317-rocketbar-suggestions

Bug 952937 - Rocketbar: e.me Search Suggestions [r=kgrandon, ranbena]

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https://hg.mozilla.org/integration/gaia-central/rev/82f83604538d
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Bug 952937 - Rocketbar: e.me Search Suggestions [r=kgrandon,ranbena]