Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/d12e0ae384fd
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #23944 from crdlc/bug-1064419

Bug 1064419 - [Contacts][Facebook] Facebook contacts imported without a ...

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https://hg.mozilla.org/integration/gaia-central/rev/f9f9e76516bd
Author: crdlc <crdlc@tid.es>
Desc: Bug 1064419 - [Contacts][Facebook] Facebook contacts imported without a profile picture displays incorrectly in Contacts app
Bumping manifests a=b2g-bump