Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/c67e512b91e8
Author: Teodosia Pop <teodosia.pop@gmail.com>
Desc: Merge pull request #13588 from bebef1987/gallery

Bug 925854 - Re-enable test_gallery_edit_photo

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https://hg.mozilla.org/integration/gaia-1_2/rev/98c3a90753b7
Author: Bebe <bebe@mozilla.ro>
Desc: Bug 925854 - Re-enable test_gallery_edit_photo