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

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https://hg.mozilla.org/integration/gaia-central/rev/8d0f8afa3650
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #10966 from crdlc/bug-890811

Bug 890811 - SIM import needs to support canceling

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https://hg.mozilla.org/integration/gaia-central/rev/068a73311596
Author: crdlc <crdlc@tid.es>
Desc: Bug 890811 - SIM import needs to support canceling