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

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https://hg.mozilla.org/integration/gaia-central/rev/d93ebd378d1c
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #14296 from alivedise/bugzilla/945597/lock-lockscreen-orientation

Bug 945597 - Get default orientation by locking orientation default on b...r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/0ac322340911
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 945597 - Get default orientation by locking orientation default on booting