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

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https://hg.mozilla.org/integration/gaia-central/rev/d5f9a04fc524
Author: Brian Hackett <bhackett1024@gmail.com>
Desc: Bug 978562 - Remove redundant assignment to {TypedArray}.length, r=gsvelto.
Bumping manifests a=b2g-bump