Bumping gaia.json for 2 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/edd7c75411d3
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #15205 from viorelaioia/bug_949467_v1.3

Bug 949467 - [v1.3] Fix intermittent fail in test_homescreen_delete_app

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https://hg.mozilla.org/integration/gaia-1_3/rev/6c94d06759aa
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 949467 - Fix intermittent fail in test_homescreen_delete_app