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

========

https://hg.mozilla.org/integration/gaia-central/rev/eafe46cf2934
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #21019 from crdlc/bug-1029847-v2

Bug 1029847 - [B2G][2.0][Flame][Vertical Homescreen] Icons dont keep the same order after OTA update

========

https://hg.mozilla.org/integration/gaia-central/rev/583ce8a59f18
Author: crdlc <crdlc@tid.es>
Desc: Bug 1029847 - [B2G][2.0][Flame][Vertical Homescreen] Icons dont keep the same order after OTA update
Bumping manifests a=b2g-bump