test: fix V8 serdes test for V8 9.1

Refs: v8/v8@40e499c

PR-URL: #38273
Backport-PR-URL: #38991
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Mary Marchini <oss@mmarchini.me>

Author: targos

test/parallel/test-v8-serdes.js

@@ -50,7 +50,7 @@ const hostObject = new (internalBinding('js_stream').JSStream)();
 {
   const ser = new v8.DefaultSerializer();
   ser._getDataCloneError = common.mustCall((message) => {
-    assert.strictEqual(message, '[object Object] could not be cloned.');
+    assert.strictEqual(message, '#<Object> could not be cloned.');
     return new Error('foobar');
   });