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

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https://hg.mozilla.org/integration/gaia-central/rev/5635b82282e8
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #17084 from flodolo/bug943855_happysad

Bug 943855 - Feedback faces: text not centered, layout broken with long strings

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https://hg.mozilla.org/integration/gaia-central/rev/d530ea1d84fd
Author: Francesco Lodolo (:flod) <flod@lodolo.net>
Desc: Bug 943855 - Sade/happy face: layout broken with long strings, text not centered
Bumping manifests a=b2g-bump