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

========

https://hg.mozilla.org/integration/gaia-central/rev/bdc2d477fa1d
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #25753 from timdream/keyboard-aria-label2

Bug 1092911 - Correct aria-label for layout switching keys, r=rudyl

========

https://hg.mozilla.org/integration/gaia-central/rev/e9d899d92a37
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1092911 - Correct aria-label for layout switching keys

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "f0067495bd2b43be709e1be05c6039e7f919577d", 
+    "revision": "bdc2d477fa1d496b8b49761047c22250095db908", 
     "repo_path": "/integration/gaia-central"
 }