chore: release langgraph python sdk 0.0.15 (#473)

Author: ranst91

typescript-sdk/integrations/langgraph/python/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "ag-ui-langgraph"
-version = "0.0.14"
+version = "0.0.15"
 description = "Implementation of the AG-UI protocol for LangGraph."
 authors = ["Ran Shem Tov <[email protected]>"]
 readme = "README.md"