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

========

https://hg.mozilla.org/integration/gaia-central/rev/4142a1c96514
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #24356 from gauravmittal1995/css

#1065753 Remove sb-icon-notification from statusbar stylesheet R=gauravmittal1995

========

https://hg.mozilla.org/integration/gaia-central/rev/27501d00cd8c
Author: Gaurav Mittal <gaurav.mittal@students.iiit.ac.in>
Desc: #1065753 Remove sb-icon-notification from statusbar stylesheet R=gauravmittal1995

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "eab22e43e5104a60bab7c498ad6603f932a975c8", 
+    "revision": "4142a1c96514d4c96d14bba1200f36d6ea8d772a", 
     "repo_path": "/integration/gaia-central"
 }