Use latest stable versions to fix dependency conflicts

Updated to latest compatible versions:
- sentence-transformers: 2.3.1 -> 3.0.1 (latest)
- transformers: 4.36.0 -> 4.44.2 (latest stable)
- torch: 2.1.0 -> 2.3.0
- numpy: 1.24.3 -> 1.26.4
- huggingface-hub: 0.20.1 -> 0.24.6 (latest compatible with transformers)

These versions are all from 2024 and have been tested together.

requirements.txt

@@ -1,9 +1,9 @@
-# Core ML/NLP - using stable compatible versions
-sentence-transformers==2.3.1
+# Core ML/NLP - latest stable versions
+sentence-transformers==3.0.1
 hnswlib==0.8.0
-transformers==4.36.0
-torch==2.1.0
-numpy==1.24.3
+transformers==4.44.2
+torch==2.3.0
+numpy==1.26.4
 scikit-learn==1.5.0
 scipy==1.13.0
 
@@ -26,8 +26,8 @@ pandas==2.2.2
 rdflib==7.0.0
 SPARQLWrapper==2.0.0
 
-# Hugging Face - compatible versions (sentence-transformers 2.3+ doesn't need HfFolder)
-huggingface-hub==0.20.1
+# Hugging Face - latest compatible version (transformers 4.44.2 works with 0.24.x)
+huggingface-hub==0.24.6
 
 # Web interface
 streamlit==1.36.0