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

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https://hg.mozilla.org/integration/gaia-central/rev/f7a77191a8b5
Author: Salvador de la Puente González <salva@unoyunodiez.com>
Desc: Merge pull request #11343 from arcturus/bug-901472

Bug 901472 - [Cost Control] Modify the parameters for checking the credit in Colombia
r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/23386613230c
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Bug 901472 - [Cost Control] Modify the parameters for checking the credit in Colombia

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "f53a55fb7dba1a760bcd3a02d6509f2db0c78c9d", 
+    "revision": "f7a77191a8b53c3666c6322e6951a94e7d118b6f", 
     "repo_path": "/integration/gaia-central"
 }