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

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https://hg.mozilla.org/integration/gaia-1_3/rev/e6ed89bfd2e4
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 987838 - Fix lint errors due to disabling of intermittent test
Bumping manifests a=b2g-bump