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

========

https://hg.mozilla.org/integration/gaia-central/rev/f6e1aa626400
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Merge pull request #20571 from Cwiiis/bug1025064

Bug 1025064 - Restore transitions in the task manager. r=alive

========

https://hg.mozilla.org/integration/gaia-central/rev/9f24bd775dde
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 1025064 - Restore transitions in the task manager. r=alive
Bumping manifests a=b2g-bump