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

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https://hg.mozilla.org/integration/gaia-central/rev/038ee58754c2
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #19749 from KevinGrandon/bug_1017360_vertical_dragdrop

Bug 1017360 - [Vertical] Dragdrop improvements

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https://hg.mozilla.org/integration/gaia-central/rev/0775e3c874bc
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1017360 - [Vertical] Dragdrop improvements r=crdlc
Bumping manifests a=b2g-bump