Bump Javamelody version to 1.53.0

This is a maintenance release and fixes some vulnerabilities bugs [1].

[1] https://code.google.com/p/javamelody/wiki/ReleaseNotes

Change-Id: I03a9a4debdddab5b5d33d94bb9d5979f7028aae3
diff --git a/lib/BUCK b/lib/BUCK
index bd3626d..023e81a 100644
--- a/lib/BUCK
+++ b/lib/BUCK
@@ -2,8 +2,8 @@
 
 maven_jar(
   name = 'javamelody',
-  id = 'net.bull.javamelody:javamelody-core:1.52.0',
-  sha1 = '56a95e342f346a775887e7d0f6c302cd3cde014b',
+  id = 'net.bull.javamelody:javamelody-core:1.53.0',
+  sha1 = 'c3692ae48f9a363baac3bc52ab0a9ed55c2662c5',
   license = 'DO_NOT_DISTRIBUTE',
 )