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

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https://hg.mozilla.org/integration/gaia-central/rev/1b47e97d3368
Author: dwi2 <dwi2@dwi2.com>
Desc: Merge pull request #14115 from dwi2/bug943755

Bug 943755 - Make some space for checkbox in Hotspot settings

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https://hg.mozilla.org/integration/gaia-central/rev/6ec557d4167b
Author: tzhuang <tzhuang@mozilla.com>
Desc: Bug 943755 - Make some space for checkbox in Hotspot settings