[bots] verbose logs when analyzing samples (#90447)

dev/bots/analyze.dart

@@ -118,10 +118,10 @@ Future<void> run(List<String> arguments) async {
     ...arguments,
   ]);
 
-  // Analyze all the sample code in the repo
+  // Analyze all the sample code in the repo.
   print('$clock Sample code...');
   await runCommand(dart,
-    <String>[path.join(flutterRoot, 'dev', 'bots', 'analyze_sample_code.dart')],
+    <String>[path.join(flutterRoot, 'dev', 'bots', 'analyze_sample_code.dart'), '--verbose'],
     workingDirectory: flutterRoot,
   );