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

========

https://hg.mozilla.org/integration/gaia-central/rev/0406638800c0
Author: Kyle Machulis <kyle@nonpolynomial.com>
Desc: Merge pull request #27333 from qdot/1107674-settings-privileges-test

Bug 1107674 - Gaia UI Test (Privileged) for Settings API Access

========

https://hg.mozilla.org/integration/gaia-central/rev/02da08ffca8f
Author: Kyle Machulis <kyle@nonpolynomial.com>
Desc: Bug 1107674 - Gaia UI Test (Privileged) for Settings API Access

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "1764121939b82f4ded4ca30761df48c3841028b0", 
+    "revision": "0406638800c0a0b2af909ff2cf7fca9457e5f545", 
     "repo_path": "integration/gaia-central"
 }