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

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https://hg.mozilla.org/integration/gaia-central/rev/de133ead8cfb
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #10862 from crdlc/bug-890815

Bug 890815 - Common importers need to support cancelling (Facebook, Gmail,...)

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https://hg.mozilla.org/integration/gaia-central/rev/b6e9bf38815c
Author: crdlc <crdlc@tid.es>
Desc: Bug 890815 - Common importers need to support cancelling (Facebook, Gmail,...)