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

========

https://hg.mozilla.org/integration/gaia-central/rev/91610c52ff41
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #16068 from flodolo/bug932270_ampm

Bug 932270 - Make AM/PM localizable in 12 hours format

========

https://hg.mozilla.org/integration/gaia-central/rev/8e4ace68a328
Author: Francesco Lodolo (:flod) <flod@lodolo.net>
Desc: Bug 932270 - Make AM/PM localizable in 12 hours format
Bumping manifests a=b2g-bump