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

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https://hg.mozilla.org/integration/gaia-central/rev/06c7c071929c
Author: Dominic Kuo <dkuo@mozilla.com>
Desc: Merge pull request #22616 from dominickuo/bug-1050112

Bug 1050112 - [Music] correct the media-button path, r=jimporter

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https://hg.mozilla.org/integration/gaia-central/rev/f8b7613ede49
Author: Dominic Kuo <dkuo@mozilla.com>
Desc: Bug 1050112 - [Music] correct the media-button path

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "f432fa4d6b84eaade8d2dc87d40f9137fe445754", 
+    "revision": "06c7c071929cab4b8591767f7522040946356226", 
     "repo_path": "/integration/gaia-central"
 }