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

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https://hg.mozilla.org/integration/gaia-central/rev/8ae74ec56a8c
Author: Sebastiaan de Haan <me@sebastiaandehaan.nl>
Desc: Bug 937103 - Removed the condition placed by bug 818287. r=dhunt