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

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https://hg.mozilla.org/integration/gaia-central/rev/9f0aef2b07cf
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #24256 from KevinGrandon/bug_971486_system2_edge_swipe_detector

Bug 971486 - [System2] Instantiable EdgeSwipeDetector

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https://hg.mozilla.org/integration/gaia-central/rev/43cdea978904
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 971486 - [System2] Instantiable EdgeSwipeDetector r=alive
Bumping manifests a=b2g-bump