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

========

https://hg.mozilla.org/integration/gaia-central/rev/02b50e5b3ca8
Author: Corey Frang <gnarf37@gmail.com>
Desc: Bug 892480 - [SMS] Sending two phone numbers separed by space or enter should detect two phone numbers - r=arcturus

* Shorten the greediness of the match to not accept as many numbers
* Added a check to ensure that the character after the match is not a digit
* Only allow space and tab as separators in phone numbers

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "c61d272d29ae209d8289ea8605d4bfa253c27833", 
+    "revision": "02b50e5b3ca8d7a12bd64499c1bc56d83cd6fc78", 
     "repo_path": "/integration/gaia-central"
 }