[action] Recursive folder lookup attachconfig.yml

tools/ci/bsp_buildings.py

@@ -162,9 +162,10 @@ if __name__ == "__main__":
         yml_files_content = []
         directory = os.path.join(rtt_root, 'bsp', bsp, '.ci/attachconfig')
         if os.path.exists(directory):
-            for filename in os.listdir(directory):
+            for root, dirs, files in os.walk(directory):
+                for filename in files:
                     if filename.endswith('attachconfig.yml'):
-                    file_path = os.path.join(directory, filename)
+                        file_path = os.path.join(root, filename)
                         if os.path.exists(file_path):
                             with open(file_path, 'r') as file:
                                 content = yaml.safe_load(file)