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

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https://hg.mozilla.org/integration/gaia-central/rev/d6a5a6c41d8d
Author: Tzu-Lin Huang <dwi019@gmail.com>
Desc: Merge pull request #26735 from dwi2/bug1105976

Bug 1105976 - [Stingray][Home] Add Folder structure and its data access methods

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https://hg.mozilla.org/integration/gaia-central/rev/21a1cae0e006
Author: Tzu-Lin Huang <tzhuang@mozilla.com>
Desc: Bug 1105976 - [Stingray][Home] Add Folder structure and its data access methods
Bumping manifests a=b2g-bump