Bumping gaia.json for 1 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/705d123deba5
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #13354 from julienw/924475-master-fix

Bug 924475 - [Messages] The context menu is missing the contact name and...(cherry picked from commit 55977f034e24c9386af1c92a3eed53a92d901a33)

Conflicts:
	apps/sms/test/unit/thread_ui_test.js