Bumping gaia.json for 1 gaia-central revision(s)

========

https://hg.mozilla.org/integration/gaia-central/rev/93d613b62a46
Author: Steve Chung <schung@mozilla.com>
Desc: Bug 889763 - [MMS] Only image is received when sending image + audio file from android device. Co-author with gnarf37

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "8d2dd720cd081de5c2ccd2c7762950a4212225c1", 
+    "revision": "93d613b62a4697824f918b3625da100d2e177eaa", 
     "repo_path": "/integration/gaia-central"
 }