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

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https://hg.mozilla.org/integration/gaia-central/rev/2fe4d936fd60
Author: Rudy Lu <left.lu@gmail.com>
Desc: Merge pull request #11465 from littleq0903/bug-902649-2

Bug 902549 - [B2G][l10n][Email] Double @@ signs in the second keyboard layer. r=rudylu

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https://hg.mozilla.org/integration/gaia-central/rev/cfb7d57a7779
Author: LittleQ <littleq0903@gmail.com>
Desc: Bug 902549 - [B2G][l10n][Email] Double @@ signs in the second keyboard layer