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

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https://hg.mozilla.org/integration/gaia-central/rev/de9e002f7a7c
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #19715 from crdlc/bug-1016822

Bug 1016822 - [Vertical Homescreen] Implement the RocketBar & status bar...

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https://hg.mozilla.org/integration/gaia-central/rev/b208bea3d170
Author: crdlc <crdlc@tid.es>
Desc: Bug 1016822 - [Vertical Homescreen] Implement the RocketBar & status bar visuals properly
Bumping manifests a=b2g-bump