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

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https://hg.mozilla.org/integration/gaia-central/rev/ed1f5d6ebb9f
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #18437 from KevinGrandon/bug_985460_home2_icon_movement

Bug 985460 - [Home2] Icon Movement in Vertical List

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https://hg.mozilla.org/integration/gaia-central/rev/20a2c748b5db
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 985460 - [Home2] Icon Movement in Vertical List r=me
Bumping manifests a=b2g-bump