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

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https://hg.mozilla.org/integration/gaia-central/rev/76bcac0bd061
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #23776 from KevinGrandon/bug_1063789_places_no_app_results

Bug 1063789 - [System][Rocketbar] Do not save places for non-browser frames

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https://hg.mozilla.org/integration/gaia-central/rev/52ab58a658c7
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1063789 - [System][Rocketbar] Do not save places for non-browser frames r=daleharvey
Bumping manifests a=b2g-bump