fix: Convert cohere embedding to np.float32 (#24)

milvus_model/dense/cohere.py

@@ -49,7 +49,7 @@ def _call_cohere_api(self, texts: List[str], input_type: str) -> List[np.array]:
             truncate=self.truncate
         ).embeddings
         if self.embedding_types is None:
-            results = [np.array(data) for data in embeddings]
+            results = [np.array(data, dtype=np.float32) for data in embeddings]
         else:
             results = getattr(embeddings, self.embedding_types[0], None)
             if self.embedding_types[0] == "binary":