Add huggingface version in requirements (#249)

HF_hub 0.26 discountinued support to cached_download, which is needed for this chatbot. Reverting to HF_hub 0.25 to avoid errors.

Author: sduttanv

community/oran-chatbot-multimodal/requirements.txt

@@ -5,6 +5,7 @@ datasets
 docx2txt
 faiss-cpu
 fastapi==0.104.1
+huggingface_hub==0.25
 gspread==6.0.0
 jupyterlab==4.0.8
 langchain==0.2.5
@@ -32,4 +33,4 @@ torch==2.1.2
 transformers==4.35.2
 unstructured[all-docs]==0.11.2
 uvicorn[standard]==0.24.0
-wheel
+wheel