test: wait for debugger connect completion

Author: inoway46

test/parallel/test-debugger-restart-message.js

@@ -20,7 +20,7 @@ const startCLI = require('../common/debugger');
 
   async function onWaitForInitialBreak() {
     try {
-      await cli.waitFor(/Debugger attached\./);
+      await cli.waitFor(/ ok\n/);
       await cli.waitForPrompt();
       assert.strictEqual(cli.output.match(listeningRegExp).length, 1);