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

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https://hg.mozilla.org/integration/gaia-central/rev/e089fe3d2b9a
Author: Reuben Morais <reuben.morais@gmail.com>
Desc: Merge pull request #11915 from reubenmorais/contacts-customization

Bug 891723 - Implement preloaded contacts customization by SIM. r=arcturus

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https://hg.mozilla.org/integration/gaia-central/rev/4fed03c0b3b4
Author: Reuben Morais <reuben.morais@gmail.com>
Desc: Bug 891723 - Implement preloaded contacts customization by SIM. r=arcturus