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

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https://hg.mozilla.org/integration/gaia-central/rev/ea4c75bb0484
Author: Ran Ben Aharon <ran@everything.me>
Desc: Merge pull request #14050 from EverythingMe/942845-double-search

Bug 942845 - Results refresh twice after pressing enter on the keyboard [r=crdlc,evyatron]

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https://hg.mozilla.org/integration/gaia-central/rev/5f7b5d487071
Author: Ran Ben Aharon <ran@ranbena.com>
Desc: Bug 942845 - Results refresh twice after pressing enter on the keyboard [r=crdlc,evyatron]