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

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https://hg.mozilla.org/integration/gaia-1_3/rev/40aab2614986
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Bug 966027

* Focus search box in e.me EvmeLoaded callback when activationIcon OR activationIconInput is clicked.

r=ranbena, a=fabrice
Bumping manifests a=b2g-bump