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

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https://hg.mozilla.org/integration/gaia-central/rev/207980d1a864
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #11714 from alivedise/bugzilla/904525/voicemail-number

Bug 904525 - Fetch voicemail number from settings DB before looking up navigator.voicemail.number, r=alive, a=leo+

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https://hg.mozilla.org/integration/gaia-central/rev/7f46d67b197d
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 904525 - Fetch voicemail number from settings DB before looking up
navigator.voicemail.number