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/21ac34a6e129
Author: AndreiH <andrei.hutusoru@gmail.com>
Desc: Merge pull request #14407 from bebef1987/944274_1.2

Bug 944274 - The self.lockscreen.is_locked is True when user unlock from...

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https://hg.mozilla.org/integration/gaia-1_2/rev/6dc986072115
Author: askeing <askeing@gmail.com>
Desc: Bug 944274 - The self.lockscreen.is_locked is True when user unlock from lockscreen to camera with passcode