Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/14400ee07e83
Author: Ed Morley <emorley@mozilla.com>
Desc: Revert "Bug 1032675 - [System] upgrade the new default tones for OTA" for jshint warnings

This reverts commit cca47053e27002b754932ea488c7184d84543832.
Bumping manifests a=b2g-bump