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

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https://hg.mozilla.org/integration/gaia-central/rev/fbe8db49928d
Author: Reuben Morais <reuben.morais@gmail.com>
Desc: Merge pull request #13046 from reubenmorais/contacts-picker

Bug 929492 - Stop manually copying properties of Contact objects. r=bkelly

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https://hg.mozilla.org/integration/gaia-central/rev/b9ea1a2713df
Author: Reuben Morais <reuben.morais@gmail.com>
Desc: Bug 929492 - Stop manually copying properties of Contact objects. r=bkelly

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "265cfcff3e9940e44c6baa112f451c9819f54519", 
+    "revision": "fbe8db49928d667dda2af9ed1d6c5ecdfcce49b8", 
     "repo_path": "/integration/gaia-central"
 }