fix: the behaviour of os.listdir() is slightly different from Path.iterdir()

Author: moe-ad

src/ansys/dpf/core/core.py

@@ -770,7 +770,7 @@ def upload_files_in_folder(
                     server_paths = self._upload_and_get_server_path(
                         specific_extension,
                         str(f),
-                        str(filename),
+                        filename.name,
                         server_paths,
                         str(to_server_folder_path),
                         subdirectory,