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

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https://hg.mozilla.org/integration/gaia-central/rev/7eadade805f5
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #16653 from KevinGrandon/bug_976546_utility_tray_shown

Bug 976546 - User should not be able to pull down utility tray before unlock

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https://hg.mozilla.org/integration/gaia-central/rev/046c33eed6b5
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 976546 - User should not be able to pull down utility tray before unlock
Bumping manifests a=b2g-bump