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

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https://hg.mozilla.org/integration/gaia-2_0/rev/84dfa8be395a
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1024992 - Change Flame device name from 'msm8610' to 'flame'
Bumping manifests a=b2g-bump