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

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https://hg.mozilla.org/integration/gaia-central/rev/3da80f713386
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Bug 971559 - Fix test fallout from bug 960901 being backed out.
Bumping manifests a=b2g-bump