fix: Fixed type annotation for compatability with python 3.8 (#30243)

* Fixed type annotation for compatability with python 3.8

* Fixed unsorted imports.

Author: Sai-Suraj-27

src/transformers/models/whisper/convert_openai_to_hf.py

@@ -21,7 +21,7 @@
 import tempfile
 import urllib
 import warnings
-from typing import Any, Optional, Tuple
+from typing import Any, List, Optional, Tuple
 
 import torch
 from huggingface_hub.utils import insecure_hashlib
@@ -252,7 +252,7 @@ def convert_openai_whisper_to_tfms(
 
 
 # Adapted from https://github.com/openai/tiktoken/issues/60#issuecomment-1499977960
-def _bpe(mergeable_ranks, token: bytes, max_rank=None) -> list[bytes]:
+def _bpe(mergeable_ranks, token: bytes, max_rank=None) -> List[bytes]:
     parts = [bytes([b]) for b in token]
     while True:
         min_idx = None