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

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https://hg.mozilla.org/integration/gaia-central/rev/0bd51266be55
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #12232 from JinhoHwang/Bug_907505_Screen_Manager_registers_duplicated_event_listeners

Bug 907505 - [System] Screen_Manager registers duplicated event listener... r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/54a8c48fc105
Author: jinho.hwang <jinho.hwang@lge.com>
Desc: Bug 907505 - [System] Screen_Manager registers duplicated event listeners