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

========

https://hg.mozilla.org/integration/gaia-central/rev/4c52c3164207
Author: Albert <alberto.crespellperez@telefonica.com>
Desc: Merge pull request #24095 from acperez/bug-935103

Bug 935103 - Remove confirmation popup after PIN screen.

========

https://hg.mozilla.org/integration/gaia-central/rev/58f937364133
Author: Albert <alberto.crespellperez@telefonica.com>
Desc: Bug 935103 - Remove confirmation popup after PIN screen.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "c1728515a190abbfdb1b2a8378d1322a3b5ed7a0", 
+    "revision": "4c52c3164207370c4b9180608f73970dcc6bdb78", 
     "repo_path": "/integration/gaia-central"
 }