Update gradio version to fix bug NVIDIA#188 (NVIDIA#238)

Author: katielink

industries/healthcare/medical-device-training-assistant/src/rag_playground/requirements.txt

@@ -1,6 +1,6 @@
 PyYAML==6.0.1
 dataclass-wizard==0.22.3
-gradio==4.13.0
+gradio==4.43.0
 jinja2==3.1.3
 numpy==1.26.4
 opentelemetry-api==1.23.0