Bumping gaia.json for 4 gaia-central revision(s) a=gaia-bump
Truncated some number of revisions since the previous bump.

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https://hg.mozilla.org/integration/gaia-central/rev/f9a633acff5c
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #13924 from davidflanagan/bug937911

Bug 937911: add a Bulgarian auto-correct dictionary, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/4ece08577705
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Bug 937911: add a Bulgarian auto-correct dictionary

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https://hg.mozilla.org/integration/gaia-central/rev/9d020838514c
Author: evelynhung <jj.evelyn@gmail.com>
Desc: Merge pull request #13930 from fabi1cazenave/l10nSettingsNFC-bug941951

Bug 941951 - Missing l10n entity for Settings/NFC, r=evelyn

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https://hg.mozilla.org/integration/gaia-central/rev/e15a9dc65748
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Bug 941951 - Missing l10n entity for Settings/NFC, r=evelyn