unstructured

1f8030dd - fix(CVE-2024-39705): bump to `nltk` 3.9.1; correct model download issues (#3541)

fix(CVE-2024-39705): bump to `nltk` 3.9.1; correct model download issues (#3541) ### Summary Bumps to `nltk==3.9.1` and resolves [CVE-2024-39705](https://nvd.nist.gov/vuln/detail/CVE-2024-39705). An NLTK version bump was originally introduced in #3512 and rolled back in #3527 because `nltk==3.8.2` was yanked from PyPI, and also because we observed significant slowdowns in processing time after bumping to `nltk==3.8.2`. The processing time regression does not appear in `nltk==3.9.1`. ### Testing After the bump, CI should pass. Additionally we verified locally that files processing takes around the amount of time we would expect for a long `.docx` file. ```python In [1]: from unstructured.partition.auto import partition In [2]: filename = "test-doc.docx" In [3]: %timeit partition(filename=filename) 3.92 s ± 73 ms per loop (mean ± std. dev. of 7 runs, 1 loop each) ```