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

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https://hg.mozilla.org/integration/gaia-central/rev/be0c09628de9
Author: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Desc: Merge pull request #20657 from azasypkin/bug-1026528-corrupted-attachment

Bug 1026528 - [Messages] Corrupted attachments do not display correctly. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/c9d5f19bc2fa
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1026528 - [Messages] Corrupted attachments do not display correctly. r=julienw

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "66a7fcc35eb2b1f5414fac27802626e601ce69fc", 
+    "revision": "be0c09628de982f05287c706463cdfd871ef3faf", 
     "repo_path": "/integration/gaia-central"
 }