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/1e2d00c9e0b3
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #13514 from teodosia/bug93544-aurora

Bug 935444 - Strengthen wait_for_outgoing_call in CallScreen app object

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https://hg.mozilla.org/integration/gaia-1_2/rev/b295537bf61f
Author: Teodosia Pop <teodosia.pop@gmail.com>
Desc: Bug 935444 - Strengthen wait_for_outgoing_call in CallScreen app object