[BugFix]: Fix local mypy issues (#34739)

Signed-off-by: Martin Hickey <martin.hickey@ie.ibm.com>
Co-authored-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/entrypoints/openai/chat_completion/protocol.py

@@ -5,7 +5,6 @@
 # https://github.com/lm-sys/FastChat/blob/168ccc29d3f7edc50823016105c024fe2282732a/fastchat/protocol/openai_api_protocol.py
 import json
 import time
-from dataclasses import replace
 from typing import Annotated, Any, ClassVar, Literal
 
 import torch
@@ -16,6 +15,7 @@ from openai.types.chat.chat_completion_message import Annotation as OpenAIAnnota
 from pydantic import Field, model_validator
 
 from vllm.config import ModelConfig
+from vllm.config.utils import replace
 from vllm.entrypoints.chat_utils import (
     ChatCompletionMessageParam,
     ChatTemplateContentFormatOption,