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

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https://hg.mozilla.org/integration/gaia-2_0/rev/b9f5fdc2324d
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #25132 from RudyLu/ime/Bug1077609_uplift_v2.1

Bug 1077609 - uplift to v2.1.
(cherry picked from commit f37fac7ad3e05f8c5fb964c738848b86a62bce05)
a=v2.0, bajaj.
Bumping manifests a=b2g-bump