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

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https://hg.mozilla.org/integration/gaia-central/rev/a0b1dc08ed50
Author: Justin D'Arcangelo <justindarc@gmail.com>
Desc: Merge pull request #23970 from justindarc/bug1066045

Bug 1066045 - [v2.2][v2.1] Rapidly tapping record after switching from p...

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https://hg.mozilla.org/integration/gaia-central/rev/ad491bd7310f
Author: Justin D'Arcangelo <justindarc@gmail.com>
Desc: Bug 1066045 - [v2.2][v2.1] Rapidly tapping record after switching from picture to camera mode will take photo instead of video
Bumping manifests a=b2g-bump