chore: use latest agui integration of llamaindex

Author: ranst91

integrations/llama-index/python/examples/pyproject.toml

@@ -11,7 +11,7 @@ requires-python = ">=3.9, <3.14"
 dependencies = [
     "llama-index-core>=0.14.0,<0.15",
     "llama-index-llms-openai>=0.5.0,<0.6.0",
-    "llama-index-protocols-ag-ui>=0.2.2,<0.3",
+    "llama-index-protocols-ag-ui>=0.2.3,<0.3",
     "jsonpatch>=1.33",
     "uvicorn>=0.27.0",
     "fastapi>=0.100.0",