Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/a9ce3f2baa91
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #22207 from svic/Bug_1043856

Bug 1043856 - Increase handover timeout

========

https://hg.mozilla.org/integration/gaia-central/rev/bb1a7373c083
Author: Arno Puder <arno@puder.org>
Desc: Bug 1043856 - Increase handover timeout

========

https://hg.mozilla.org/integration/gaia-central/rev/a3be175221d3
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #22305 from wilsonpage/1045214

Bug 1045214 - [B2G][Gallery]Launching camera from gallery results in blank

========

https://hg.mozilla.org/integration/gaia-central/rev/eead19ff9fa7
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 1045214 - [B2G][Gallery]Launching camera from gallery results in blank viewfinder
Bumping manifests a=b2g-bump