Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/ab50af1c1473
Author: Dale  Harvey <dale@arandomurl.com>
Desc: Merge pull request #11213 from mpizza/Bug_898341_Camera_disable_flashlight

Bug 898341 - The flashlight icon is still here when switching to front camera. r=daleharvey

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https://hg.mozilla.org/integration/gaia-central/rev/3f21dae599a9
Author: mpizza <mmm198219@gmail.com>
Desc: Bug 898341 - The flashlight icon is still here after switching to front-facing camera