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

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https://hg.mozilla.org/integration/gaia-central/rev/67ffd0e259f4
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #27069 from asutherland/email-clone-fix

Bug 1116087 - Safely clone elements for HTML cookie cache. r=jrburke

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https://hg.mozilla.org/integration/gaia-central/rev/070ef3cfce74
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Bug 1116087 - Safely clone elements for HTML cookie cache

Bug 1081039 fixed the platform to call the custom element callback
appropriately when cloning / importing nodes.  A document context
with a fresh registry is required to do this (actually) correctly.

Without this fix the email app's HTML cookie cache would end up
with a corrupted cookie cache state and potentially other app
problems since the rest of the card infrastructure really was not
expecting this type of thing to happen.
Bumping manifests a=b2g-bump