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

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https://hg.mozilla.org/integration/gaia-central/rev/9da98cf91d52
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #13018 from dwi2/bug911291

Bug 911291 - No need to update display of simPin, identity, and password... r=crh0716

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https://hg.mozilla.org/integration/gaia-central/rev/ffcb8362a3f1
Author: tzhuang <tzhuang@mozilla.com>
Desc: Bug 911291 - No need to update display of simPin, identity, and password in #wifi-status since there are no such input elements