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

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https://hg.mozilla.org/integration/gaia-central/rev/679e72beb9f5
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #22493 from KevinGrandon/bug_1045701_smart_collections_ota

Bug 1045701 - Part 2 [Homescreen] - Do not migrated un-initialized smart collections

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https://hg.mozilla.org/integration/gaia-central/rev/bd37a95d1f01
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1045701 - Part 2 [Homescreen] - Do not migrated un-initialized smart collections r=amirn
Bumping manifests a=b2g-bump