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

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https://hg.mozilla.org/integration/gaia-central/rev/cfb69584f3b0
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #14224 from flodolo/separate_header

Bug 944749 - [Settings][l12y] Use different labels for menu items and headers, r=kaze

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https://hg.mozilla.org/integration/gaia-central/rev/c62a6e4de4f7
Author: Francesco Lodolo (:flod) <flod@lodolo.net>
Desc: Bug 944749 - [Settings][l12y] Use different labels for menu items and headers

Don't reuse labels in different contexts (and with different space available).
Use fallback to original string for headers ({{id}}) to reduce impact on existing localizations.