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

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https://hg.mozilla.org/integration/gaia-1_4/rev/02786ad53cbd
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Revert "Merge pull request #22769 from mpizza/Bug_1050097_uplift_to_v1.4"

This reverts commit ec395d47cee9234ae93d2410d8ef8724dfc5d6cb, reversing
changes made to fda0319ff8c10e54faa7f0eaec256402044209b5.
Bumping manifests a=b2g-bump