Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_1/rev/4f67a73ac8df
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1060699 - Ambient indicator based on unread notifications

Fixing unit tests
Bumping manifests a=b2g-bump