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

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https://hg.mozilla.org/integration/gaia-central/rev/3760ab2fb5d2
Author: Corey Frang <gnarf37@gmail.com>
Desc: Bug 936631 - [Settings] Make ListView work with any elements - r=arthurcc

- Remove `querySelector` in favor of just using `children[]`
- Add tests for each method in which this changed using `<div><div>` instead of `<ul><li>`
- Add test for content present during creation of ListView not being used as recycled elements

Closes gh-13706