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d4f719c3 - Convert numpy arrays to lists in HuggingFaceEmbeddings (#714)

Convert numpy arrays to lists in HuggingFaceEmbeddings (#714) `SentenceTransformer` returns a NumPy array, not a `List[List[float]]` or `List[float]` as specified in the interface of `Embeddings`. That PR makes it consistent with the interface.