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

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https://hg.mozilla.org/integration/gaia-central/rev/9174d9981701
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1103804 - merge pull request #26725 from EragonJ:bug-1103804 to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/91babe6eac2e
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 1103804 - [Settings][Dialog] wifi_wps should be shown as a dialog
Bumping manifests a=b2g-bump