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

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https://hg.mozilla.org/integration/gaia-2_1/rev/985c239ae782
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #23759 from crdlc/bug-1062527

Bug 1062527 - [Homescreen] Unable to launch apps after changing the date to a previous one(cherry picked from commit 3a99e64704f1793f1bb547d19859d00721073a7c)
Bumping manifests a=b2g-bump