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/160fa2dd293a
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Merge pull request #15727 from gtorodelvalle/contacts-bug-962989-message-to-Facebook-contact

Bug 962989 - [messages] sending message to a Facebook contact doesn't work (r=jmcanterafonseca)
(cherry picked from commit f856ac26063e5462efad3cf13a46b35c6686af5b)

Conflicts:
	build/jshint/xfail.list