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

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https://hg.mozilla.org/integration/gaia-central/rev/9fe735c68e59
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #21225 from arcturus/bug-946224

Bug 946224 - Alphabets on right side in the contact book are too small to select r=francisco

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https://hg.mozilla.org/integration/gaia-central/rev/a1dac1b089a3
Author: Francisco Jordano <fjordano@mozilla.com>
Desc: Bug 946224 - Alphabets on right side in the contact book are too small to select r=francisco
Bumping manifests a=b2g-bump