Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/1955cfa26e44
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #10908 from hfiguiere/bug891395

Bug 891395 - Fix regexp that matches HiDPI. This avoid overriding apn.json, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/acee662c5bbb
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 891395 - Fix regexp that matches HiDPI. This avoid overriding apn.json.