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/b665ad458365
Author: Ben Kelly <bkelly@mozilla.com>
Desc: Merge pull request #13602 from wanderview/contacts-monitor-no-timer-1

Bug 936908: Do not batch work from monitor onscreen/offscreen.  r=arcturus(cherry picked from commit 38d26104bbb97b46207aacd46aeb2e8d3b3e77eb)

Conflicts:
	apps/communications/contacts/js/views/list.js