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

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https://hg.mozilla.org/integration/gaia-central/rev/0466de7e605c
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #15967 from comoyo/bug968085

Bug 968085 - Don't rely on global variable from keyboard.js in render.js. r=RudyL

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https://hg.mozilla.org/integration/gaia-central/rev/4dade487755f
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 968085 - Don't rely on global variable from keyboard.js in render.js
Bumping manifests a=b2g-bump