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

========

https://hg.mozilla.org/integration/gaia-central/rev/5656596e1660
Author: GaryChen,PYChen <mmm198219@gmail.com>
Desc: Merge pull request #17710 from mpizza/Bug_979750_landed_in_master

Bug 979750 - [System2] "attention_screen" and "media_recording" missing "Applications". r=alive

========

https://hg.mozilla.org/integration/gaia-central/rev/eec429e5b1f0
Author: mpizza <mmm198219@gmail.com>
Desc: Bug 979750 - [System2] "attention_screen" and "media_recording" missing "Applications"

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "91df1a6ddc66520262bd74ad16f521473ff266cd", 
+    "revision": "5656596e16603aad2f55c4aacd9561975212dc72", 
     "repo_path": "/integration/gaia-central"
 }