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

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https://hg.mozilla.org/integration/gaia-2_0/rev/8660ec471552
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Revert "Merge pull request #21602 from RudyLu/keyboard/Bug1034210_commit"

This reverts commit a00bc5797ccf693a13a32572252bab410f72f30e.
Bumping manifests a=b2g-bump