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

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https://hg.mozilla.org/integration/gaia-central/rev/ef04d8bbf52a
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Merge pull request #11116 from lissyx/bug894338

Bug 894338 - Fix Sao Paulo name, r=kaze

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https://hg.mozilla.org/integration/gaia-central/rev/3ab4eef46ff1
Author: Alexandre Lissy <lissyx+github@lissyx.dyndns.org>
Desc: Bug 894338 - Fix Sao Paulo name