ci(package): NamedTemporaryFile Being Opened Twice

tests/integration/package/test_package_command_image.py

@@ -131,6 +131,10 @@ def test_package_template_with_image_function_in_nested_application(self, templa
         # when image function is not in main template, erc_repo_name does not show up in stdout
         # here we download the nested application template file and verify its content
         with tempfile.NamedTemporaryFile() as packaged_file, tempfile.TemporaryFile() as packaged_nested_file:
+            # https://docs.python.org/3/library/tempfile.html#tempfile.NamedTemporaryFile
+            # Closes the NamedTemporaryFile as on Windows NT or later, NamedTemporaryFile cannot be opened twice.
+            packaged_file.close()
+
             command_list = self.get_command_list(
                 image_repository=self.ecr_repo_name,
                 template=template_path,