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

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https://hg.mozilla.org/integration/gaia-central/rev/34400b2a19b4
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #24055 from jmcanterafonseca/fix_deferred

Bug 1067303 - [Contacts] deferred actions / migrator is not working. err...

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https://hg.mozilla.org/integration/gaia-central/rev/94eb1ed2c432
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 1067303 - [Contacts] deferred actions / migrator is not working. errors in console are found

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "9d8fa873a8cd4b24832975084a1f9d593ffffb2a", 
+    "revision": "34400b2a19b48f72bdfcc50687b0753730283f27", 
     "repo_path": "/integration/gaia-central"
 }