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

========

https://hg.mozilla.org/integration/gaia-central/rev/e802b4990dbe
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #19718 from etiennesegonzac/bug-1016483

Bug 1016483 - Stop doing to expensive #screen.edges restyle r=21

========

https://hg.mozilla.org/integration/gaia-central/rev/00d7c032ca44
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 1016483 - Stop doing the expensive #screen.edges restyle
Bumping manifests a=b2g-bump