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

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https://hg.mozilla.org/integration/gaia-central/rev/2e5148bf1e3f
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #22503 from KevinGrandon/bug_1046330_fullscreen_app_title

Bug 1046330 - [Rocketbar] App title does not appear after a swipe in fullscreen apps

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https://hg.mozilla.org/integration/gaia-central/rev/9882d7c5a3a9
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1046330 - [Rocketbar] App title does not appear after a swipe in fullscreen apps r=vingtetun
Bumping manifests a=b2g-bump