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

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https://hg.mozilla.org/integration/gaia-central/rev/123a4b7418cf
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #10449 from alivedise/bugzilla/828965_master

Bug 828965 - Move permission screen z-index on lockscreen camera, r=timdream, a=leo+

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https://hg.mozilla.org/integration/gaia-central/rev/b698acaadf03
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 828965 - Move permission screen z-index on lockscreen camera