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

========

https://hg.mozilla.org/integration/gaia-central/rev/e7598cf28c92
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1001166 - Disable intermittent failing test, creating an event opening event in read view should not overflow title, location, or description
Bumping manifests a=b2g-bump