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/4f72374e1f6d
Author: AndreiH <andrei.hutusoru@gmail.com>
Desc: Merge pull request #15413 from AlinT/bug_960546

Bug 960546 - [v1.3] Xfail test_set_passcode_by_settings because of

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https://hg.mozilla.org/integration/gaia-1_3/rev/1e858d4dc7d6
Author: AlinT <trifandreialin@gmail.com>
Desc: Bug 960546 - [v1.3] Xfail test_set_passcode_by_settings because of
Bug 959193 - [v1.3]Running test_set_passcode_by_settings causes a blank screen in settings app