Bumping gaia.json for 1 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/aa2108bb5f54
Author: Corey Frang <gnarf37@gmail.com>
Desc: Bug 870711 - Fixes URL linking in SMS - r=julienw

* Rewrote LinkHelper to avoid a bunch of edge cases and overlapping links
* Modeled greatly after `android.text.util.Linkify`
* Co-Author credit for @lissyx for starting me out with an awesome unit test suite

Closes gh-10741