Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/89c632d4abfe
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #16762 from KevinGrandon/bug_978440_disable_perma_fail_test

Bug 978440 - Disable test so we don't have to close the tree r=me

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https://hg.mozilla.org/integration/gaia-central/rev/60d5a9c9d21f
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 978440 - Disable test so we don't have to close the tree
Bumping manifests a=b2g-bump