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/1ba70797275d
Author: AndreiH <andrei.hutusoru@gmail.com>
Desc: Merge pull request #15589 from viorelaioia/bug_962481

Bug 962481 - [v1.3] xfail test_sms_with_attachments with Bug 960537 as Bug 945774 was fixed

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https://hg.mozilla.org/integration/gaia-1_3/rev/fa36b7ae7d26
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 962481 - [v1.3] xfail test_sms_with_attachments with Bug 960537 as Bug 945774 was fixed