Update deprecated type hinting in models (#18132)

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

vllm/model_executor/models/dbrx.py

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
-from typing import Iterable, Optional, Set, Tuple, Union
+from collections.abc import Iterable
+from typing import Optional, Union
 
 import torch
 import torch.nn as nn
@@ -414,14 +415,14 @@ class DbrxForCausalLM(nn.Module, SupportsPP):
                                        sampling_metadata)
         return logits
 
-    def load_weights(self, weights: Iterable[Tuple[str,
-                                                   torch.Tensor]]) -> Set[str]:
+    def load_weights(self, weights: Iterable[tuple[str,
+                                                   torch.Tensor]]) -> set[str]:
         expert_params_mapping = [(
             "w13" if weight_name in ["w1", "v1"] else "w2",
             f"mlp.{weight_name}",
         ) for weight_name in ["w1", "v1", "w2"]]
         params_dict = dict(self.named_parameters(remove_duplicate=False))
-        loaded_params: Set[str] = set()
+        loaded_params: set[str] = set()
 
         for name, loaded_weight in weights:
             if (self.quant_config is not None and