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

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https://hg.mozilla.org/integration/gaia-central/rev/8175c3383310
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #26808 from mikehenrty/bug-1105454-sim-with-settings

Bug 1105454 - Close Sim Pin dialog when opening settings app

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https://hg.mozilla.org/integration/gaia-central/rev/2097fbc17363
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1105454 - Close Sim Pin dialog when opening settings app
Bumping manifests a=b2g-bump