Upgrade javamelody-core to 1.78.0

Change-Id: I9e696accf6f68739aff04d061d8d9562e9397a32
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index e3648d3..509328e 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -3,8 +3,8 @@
 def external_plugin_deps():
     maven_jar(
         name = "javamelody-core",
-        artifact = "net.bull.javamelody:javamelody-core:1.77.0",
-        sha1 = "a2b2dd1d39f21d185ea3215830661002445664a4",
+        artifact = "net.bull.javamelody:javamelody-core:1.78.0",
+        sha1 = "ef94662b59d963cfa1f59280dd1c11e25de8d66c",
     )
 
     maven_jar(