Update deprecated type hinting in models (#18132)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/model_executor/models/qwen2_rm.py

@@ -5,7 +5,8 @@
 # Copyright 2024 The Qwen team.
 # Copyright 2023 The vLLM team.
 """Inference-only Qwen2-RM model compatible with HuggingFace weights."""
-from typing import Iterable, Optional, Set, Tuple, Union
+from collections.abc import Iterable
+from typing import Optional, Union
 
 import torch
 from torch import nn
@@ -95,8 +96,8 @@ class Qwen2RewardBaseModel(nn.Module, SupportsLoRA, SupportsPP,
     ) -> Optional[PoolerOutput]:
         return self._pooler(hidden_states, pooling_metadata)
 
-    def load_weights(self, weights: Iterable[Tuple[str,
-                                                   torch.Tensor]]) -> Set[str]:
+    def load_weights(self, weights: Iterable[tuple[str,
+                                                   torch.Tensor]]) -> set[str]:
         loader = AutoWeightsLoader(self,
                                    ignore_unexpected_prefixes=["lm_head."])
         return loader.load_weights(weights)