Update dependency nltk to v3.9.4 [SECURITY] (#239)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

template/requirements.txt

@@ -19,7 +19,7 @@ gensim==4.4.0
 imageio==2.37.3
 joblib==1.5.3
 librosa==0.11.0
-nltk==3.9.3
+nltk==3.9.4
 numpy==2.3.5
 numba==0.63.1
 opencv-python==4.11.0.86