[Bugfix] Update Ultravox compatibility (#29588)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

vllm/model_executor/models/ultravox.py

@@ -116,7 +116,12 @@ class UltravoxProcessingInfo(BaseProcessingInfo):
 
     def get_feature_extractor(self, **kwargs: object) -> WhisperFeatureExtractor:
         hf_processor = self.get_hf_processor(**kwargs)
+
+        # Changed in https://huggingface.co/fixie-ai/ultravox-v0_5-llama-3_2-1b/commit/9a3c571b8fdaf1e66dd3ea61bbcb6db5c70a438e
         audio_processor = hf_processor.audio_processor  # type: ignore
+        if isinstance(audio_processor, WhisperFeatureExtractor):
+            return audio_processor
+
         feature_extractor = audio_processor.feature_extractor  # type: ignore
         assert isinstance(feature_extractor, WhisperFeatureExtractor)
         return feature_extractor