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

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https://hg.mozilla.org/integration/gaia-central/rev/3229ec6e0f10
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #22933 from wilsonpage/1016814

Bug 1016814 - [System] Update to use gaia-header

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https://hg.mozilla.org/integration/gaia-central/rev/c47377e60ffb
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 1016814 - [System] Update to use gaia-header

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "96f5f3ae4f827670048412b8cb48ebacfe718a6b", 
+    "revision": "3229ec6e0f100e49745931cd3e8c35bdbc8a68e0", 
     "repo_path": "/integration/gaia-central"
 }