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

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https://hg.mozilla.org/integration/gaia-central/rev/58d73404571f
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #10848 from KevinGrandon/bug_889466_lockscreen_events

Bug 889466 - Use touch events for lockscreen r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/f6ddb049b529
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 889466 - Use touch events for lockscreen