Bumping gaia.json for 1 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/3e11ec6121f4
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #12383 from crh0716/904345

Bug 904345 - Handle the case of the 'ready' state r=kaze(cherry picked from commit 9bebe761f816d210e98700784a04387722443dcb)