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

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https://hg.mozilla.org/integration/gaia-central/rev/2247606819e9
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #17993 from wilsonpage/bug/991344

Bug 991344 - [B2G][Contacts][Camera]Unable to attach image from camera to contact because camera never loads

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https://hg.mozilla.org/integration/gaia-central/rev/c58233cef777
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 991344 - [B2G][Contacts][Camera]Unable to attach image from camera to contact because camera never loads
Bumping manifests a=b2g-bump