test: update test-heapdump-vm-script.js for new version of V8

Signed-off-by: Joyee Cheung <joyeec9h3@gmail.com>

Author: joyeecheung

test/pummel/test-heapdump-vm-script.js

@@ -5,7 +5,7 @@ const source = 'const foo = 123';
 const script = require('vm').createScript(source);
 
 validateByRetainingPath('Node / ContextifyScript', [
-  { node_name: '(shared function info)' },  // This is the UnboundScript referenced by ContextifyScript.
+  { node_name: 'system / SharedFunctionInfo' },  // This is the UnboundScript referenced by ContextifyScript.
   { edge_name: 'script' },
   { edge_name: 'source', node_type: 'string', node_name: source },
 ]);