Change umlaut test

[n00b001]

Make sure to read the contributing guidelines before submitting a PR

[IMbackK]

Yeah that seams a bit immature.

[JohannesGaessler]

My understanding is that convert_hf_to_gguf_update.py is a dev script used to update the Python code in convert_hf_to_gguf.py via manual copy-pasting. If this PR were merged as-is the two files would I think become inconsistent. A review from someone who is actually knowledgeable about the Python conversion scripts would be appreciated.

Edit: I meant "actually knowledgeable" in reference to myself, not others.

[ggerganov]

The convert_hf_to_gguf_update.py script needs to be executed in order to update the vocab test input/outputs in models/ggml-vocab*.gguf.inp/.out. This change won't affect the contents of convert_hf_to_gguf.py because it is only modifying the unit tests and not the tokenizer list.