Update requirements.txt

Fixed the requirements as they had old libraries

Author: aliottoman

ai/generative-ai-service/smart-invoice-extraction/requirements.txt

@@ -1,8 +1,6 @@
-pandas==1.5.3
-json==2.0.9
-langchain==0.0.209
-langchain_community==0.0.1
-streamlit==1.24.0
-oci==2.97.0
-pdf2image==1.16.3
-Pillow==8.4.0
+oci==2.140.0
+pandas==2.2.3
+streamlit==1.41.0
+langchain-community==0.3.14
+langchain-core==0.3.35
+pdf2image==1.17.0