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

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https://hg.mozilla.org/integration/gaia-1_3/rev/2085f35572aa
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Merge pull request #15680 from gtorodelvalle/contacts-bug-960525-undefined-last-name

Bug 960525 - [Contacts] undefined as contact's last name after merging
(cherry picked from commit ac717698a31dcefbcdd13574ebeb66ff7e7b57bf)

Conflicts:
	build/jshint/xfail.list