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

========

https://hg.mozilla.org/integration/gaia-central/rev/23d4de623818
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #31852 from aosmond/bug1191731

Bug 1191731 - Update to use new poster API to ensure created after. r=jdarcangelo

========

https://hg.mozilla.org/integration/gaia-central/rev/dda10c9e78af
Author: Andrew Osmond <aosmond@mozilla.com>
Desc: Bug 1191731 - Update to use new poster API to ensure created after video recorded.

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "fdd240c88c18481cb7f987e9f5d69ef6b922e9ce", 
+        "git_revision": "899860aa2f58cb2597405cd3f8572a938e7ca384", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "d9e61535888c9c11adbd2680422dae4b329b2314", 
+    "revision": "23d4de623818e31266aabfb2f9df79014a0df1b0", 
     "repo_path": "integration/gaia-central"
 }