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

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https://hg.mozilla.org/integration/gaia-central/rev/d717e2e751a6
Author: Sergi Mansilla <sergi.mansilla@gmail.com>
Desc: Merge pull request #10894 from crdlc/bug-890813

Bug 890813 - Memory Card import needs to support cancelling

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https://hg.mozilla.org/integration/gaia-central/rev/5705fd11039c
Author: crdlc <crdlc@tid.es>
Desc: Bug 890813 - Memory Card import needs to support cancelling