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

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https://hg.mozilla.org/integration/gaia-central/rev/bb795b36fc34
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #11050 from fabi1cazenave/i18nDefaultMediaLocation-bug892788

Bug 892788 - [Settings] "Cancel" and "Change" are not localized r=arthurcc

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https://hg.mozilla.org/integration/gaia-central/rev/532b7b572923
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc:  Bug 892788 - [Settings] "Cancel" and "Change" are not localized