Update Dockerfile (#220)

Author: dnandakumar-nv

community/event-driven-rag-cve-analysis/Dockerfile

@@ -67,7 +67,7 @@ RUN source activate morpheus &&\
     pip install jupyterlab_nvdashboard==0.9
 
 RUN source activate morpheus &&\
-    pip install --upgrade langchain-nvidia-ai-endpoints
+    pip install langchain-nvidia-ai-endpoints==0.2.2
 
 # Launch jupyter
 CMD ["jupyter-lab", "--ip=0.0.0.0", "--no-browser", "--allow-root"]