Update dependency ibm-watsonx-ai to v1.4.11

Author: renovate[bot]

requirements.txt

@@ -6,7 +6,7 @@ google-api-python-client==2.176.0
 google.generativeai==0.8.5
 openai==1.95.1
 zhipuai==2.1.5.20250708
-ibm-watsonx-ai==1.3.30
+ibm-watsonx-ai==1.4.11
 dotenv==0.9.9
 transformers==4.52.1
 sentence-transformers==5.0.0