Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/ff023585691e
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Merge pull request #14108 from AndreiH/bug_927131_v1.2

Bug 927131 - Add an automated test to verify that you can import contact...

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https://hg.mozilla.org/integration/gaia-1_2/rev/fa6120b505af
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 927131 - Add an automated test to verify that you can import contacts from Gmail