fix [Errno 13] Permission denied in windows (#5622)

* fix [Errno 13] Permission denied in windows

* formatting code

* formatting code

Author: invokerbyxv

pipelines/pipelines/nodes/file_converter/pdf.py

@@ -209,9 +209,13 @@ def convert(
         try:
             images = convert_from_path(file_path)
             for image in images:
-                temp_img = tempfile.NamedTemporaryFile(dir=os.path.dirname(os.path.realpath(__file__)), suffix=".jpeg")
+                temp_img = tempfile.NamedTemporaryFile(
+                    dir=os.path.dirname(os.path.realpath(__file__)), suffix=".jpeg", delete=False
+                )
                 image.save(temp_img.name)
                 pages.append(self.image_2_text.convert(temp_img.name)[0]["content"])
+                temp_img.close()
+                os.remove(temp_img.name)
         except Exception as exception:
             logger.error(f"File {file_path} has an error \n {exception}")