fix file test by providing query param

Author: 64bit

async-openai/src/file.rs

@@ -83,8 +83,9 @@ mod tests {
         //assert_eq!(openai_file.purpose, "fine-tune");
 
         //assert_eq!(openai_file.status, Some("processed".to_owned())); // uploaded or processed
+        let query = [("purpose", "fine-tune")];
 
-        let list_files = client.files().list().await.unwrap();
+        let list_files = client.files().list(&query).await.unwrap();
 
         assert_eq!(list_files.data.into_iter().last().unwrap(), openai_file);