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

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https://hg.mozilla.org/integration/gaia-central/rev/5273b92f5eee
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #10819 from masap/20130707

Bug 890694 - Add EAP-SIM/AKA/AKA' support r=crh0716

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https://hg.mozilla.org/integration/gaia-central/rev/4b1a5974eabf
Author: masap <masashi.honma@gmail.com>
Desc: Bug 890694 - Add EAP-SIM/AKA/AKA' support