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

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https://hg.mozilla.org/integration/gaia-central/rev/5fe834be8425
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #12791 from zacc/bug925677

Bug 925677 - Xfali test_camera_multiple, test_add_photo_to_contact, test...

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https://hg.mozilla.org/integration/gaia-central/rev/02a038b15423
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Bug 925677 - Xfali test_camera_multiple, test_add_photo_to_contact, test_gallery_edit_photo