Bump the rust version + support for python 3.13. (kyutai-labs#205)

* Bump the rust version + support for python 3.13.

* Fix.

* Upgrade to pyo3 0.23.

* Adapt everything to the latest pyo3/numpy.

* Update the stubs.

Remove arm-v7.

Bump the version of the macos runners.

Merge pull request kyutai-labs#100 from kyutai-labs/mimipyo3-max-seq-len

Increase max_seq_len for mimi-pyo3 and make it configurable.

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