Bumping gaia.json for 1 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/d52bc0d89762
Author: Ben Kelly <ben@wanderview.com>
Desc: Revert "Merge pull request #16127 from changm/bug968478"

This reverts commit 88bda206b1def5d4beac3be851c904414563bea3.