Bumping gaia.json for 2 gaia-central revision(s)

========

https://hg.mozilla.org/integration/gaia-central/rev/2bcf223e3a7f
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #11164 from alivedise/bugzilla/897874/notification-disappearing

Bug 897874: Delay the notification transition before event handler, r=timdream, a=leo+

========

https://hg.mozilla.org/integration/gaia-central/rev/e4e69274fdb1
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 897874: Delay the notification transition before event handler

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "4d96cb10a7e4a8595b62c49904d633e4a1f88ba6", 
+    "revision": "2bcf223e3a7fdb14a956ac450a1e347b2c48d8e1", 
     "repo_path": "/integration/gaia-central"
 }