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

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https://hg.mozilla.org/integration/gaia-central/rev/b7162b41e218
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #20784 from crh0716/1023044

Bug 1023044 - Show the signal bar for a locked sim only when making emergency calls using the sim. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/10a4ef35503f
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1023044 - Show the signal bar for a locked sim only when making emergency calls using the sim.
Bumping manifests a=b2g-bump