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

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https://hg.mozilla.org/integration/gaia-central/rev/c16a68a6edd5
Author: Dale  Harvey <dale@arandomurl.com>
Desc: Merge pull request #11216 from mpizza/Bug_898358_turnOff_flashLight_frontFacingMode

Bug 898372 - [Camera][Helix][V1.1.0 HD] FxOS doesn't turn off the light r=daleharvey

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https://hg.mozilla.org/integration/gaia-central/rev/0d12748b4ec0
Author: mpizza <mmm198219@gmail.com>
Desc: Bug 898372 - [Camera][Helix][V1.1.0 HD] FxOS doesn't turn off the light after user switched to front-facing camera