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

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https://hg.mozilla.org/integration/gaia-central/rev/cdf75f3e9e3a
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Merge pull request #12108 from fabi1cazenave/smsExplicitL10nArguments-bug915058

Bug 915058 - [SMS] use more explicit l10n arguments in dialog.js, r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/d3eb0645e8d0
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Bug 915058 - [SMS] use more explicit l10n arguments in dialog.js, r=julienw