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

========

https://hg.mozilla.org/integration/gaia-central/rev/c562dd6c65f5
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #23962 from Moz-TedC/bug-1063624-fix-attempt-2

Bug-1063624: Only call UIManager.tzInit once. r=fcampo

========

https://hg.mozilla.org/integration/gaia-central/rev/8d847892444c
Author: Ted Clancy (:tedders1) <tclancy@mozilla.com>
Desc: Bug-1063624: Only call UIManager.tzInit once. r=fcampo
Bumping manifests a=b2g-bump