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

========

https://hg.mozilla.org/integration/gaia-central/rev/e6587c3a8092
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #24438 from Maliha-Momtaz-Islam/master

Bug 1072458 - Certain characters cannot be input using Bangla keyboard.
r=rudylu

========

https://hg.mozilla.org/integration/gaia-central/rev/a60d15adac95
Author: Maliha-Momtaz-Islam <malihaislam81@gmail.com>
Desc: Bug 1072458 - Certain characters cannot be input using Bangla keyboard

========

https://hg.mozilla.org/integration/gaia-central/rev/56286d597ea3
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #24235 from aosmond/bug1068559-2

Bug 1068559 - Use auto focus completed callback to get focus state after...r=dmarcos

========

https://hg.mozilla.org/integration/gaia-central/rev/65d5dbdf99aa
Author: Andrew Osmond <aosmond@mozilla.com>
Desc: Bug 1068559 - Use auto focus completed callback to get focus state after moving.
Bumping manifests a=b2g-bump