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

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https://hg.mozilla.org/integration/gaia-central/rev/2c467de81e83
Author: albertopq <albert.pastor@gmail.com>
Desc: Merge pull request #26282 from albertopq/1100329-ambient-edge

Bug 1100329 - Ambient indicator should move with edge gestures r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/7b7bc99a6f0b
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1100329 - Ambient indicator should move with edge gestures
Bumping manifests a=b2g-bump