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

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https://hg.mozilla.org/integration/gaia-central/rev/b5a9a6b76a92
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #12261 from snowmantw/issue905889

Bug 905889 - [Buri][PLMN]Network name will be shown twice, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/970ab1d4c31a
Author: Greg Weng (snowmantw) <gweng@mozilla.com>
Desc: Bug 905889 - [Buri][PLMN]Network name will be shown twice.