Bumping gaia.json for 1 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/44b5d39b37b1
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Bug 914886 - [Settings] Use aria-disabled instead of disabled class. r=kaze

Relanding after linter error resolved.