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

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https://hg.mozilla.org/integration/gaia-central/rev/c8073936975c
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #25744 from weideng/bug1092930

Bug 1092930 - [Keyboard] No alternate indicator for Chinese period, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/e1f2f0679cdf
Author: wdeng <wdeng@mozilla.com>
Desc: Bug 1092930 - [Keyboard] No alternate indicator for Chinese period
Bumping manifests a=b2g-bump