Bumping gaia.json for 3 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/23b879f86acc
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #11999 from alivedise/bugzilla/913610/lockscreen

Bug 913610 - Backout 905116 + 913345

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https://hg.mozilla.org/integration/gaia-central/rev/03ef720d123b
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Revert "Bug 905116 - Implement Homescreen Window + Homescreen Launcher"

This reverts commit 3876c9129c8a3865eedd3a0ed92939ecf41a6eb1.

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https://hg.mozilla.org/integration/gaia-central/rev/b22494964be7
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Revert "Bug 913345 - Virtualize homescreen origin"

This reverts commit cdbf027bb90f0d2aa55cc53d11c65497f6f410c4.