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

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https://hg.mozilla.org/integration/gaia-central/rev/eb5973515698
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #12238 from dwi2/916066_wording_of_active_keyboard_page

Bug 916066 - [Keyboard][V1.2] Need to modify the wording of Active Keyboard page r=crh0716

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https://hg.mozilla.org/integration/gaia-central/rev/d41b761bcfa5
Author: tzhuang <tzhuang@mozilla.com>
Desc: Bug 916066 - [Keyboard][V1.2] Need to modify the wording of Active Keyboard page