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/33a44ec49b53
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Merge pull request #13662 from AndreiH/bug934446_v1.2

Bug 934446 - Test Messages contact input validation

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https://hg.mozilla.org/integration/gaia-1_2/rev/c6fdfdccfb2e
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 934446 - Test Messages contact input validation