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

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https://hg.mozilla.org/integration/gaia-2_0/rev/c2669446256d
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #21156 from RudyLu/keyboard/Bug1029798

 Bug 1029798 - Auto suggest should not add a character space as it makes..
r=djf
a=2.0+
(cherry picked from commit cfa144ea2400f99db77669c9954bb2cdeaac2526)

Conflicts:
	apps/keyboard/test/unit/suggest_test.js
Bumping manifests a=b2g-bump