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

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https://hg.mozilla.org/integration/gaia-central/rev/ba59f4973827
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #23336 from KevinGrandon/bug_1052481_rocketbar_visual_refinements

Bug 1052481 - [Search] Visual Refinements for Rocket Bar

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https://hg.mozilla.org/integration/gaia-central/rev/c27ac0e89b35
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1052481 - [Search] Visual Refinements for Rocket Bar r=Cwiiis
Bumping manifests a=b2g-bump