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

========

https://hg.mozilla.org/integration/gaia-central/rev/8008bdf9a104
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #21189 from KevinGrandon/bug_1032261_wc_gaia_menu_properties

Bug 1032261 - [GaiaMenu] Use locale strings inside of component folder

========

https://hg.mozilla.org/integration/gaia-central/rev/870625ed2479
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1032261 - [GaiaMenu] Use locale strings inside of component folder. r=gandalf r=yurenju
Bumping manifests a=b2g-bump