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

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https://hg.mozilla.org/integration/gaia-central/rev/ebae3f4e495c
Author: Sherman Chen <shamen.chens@gmail.com>
Desc: Bug 1062198 - Fix launching app from rocket bar search result r=kgrandon

- Hide search result and deactivate rocket bar when launching app
Bumping manifests a=b2g-bump