chore(langgraph): bump version (#6245)

- Bump langgraph version from 0.6.8 to 0.6.9

libs/langgraph/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph"
-version = "0.6.8"
+version = "0.6.9"
 description = "Building stateful, multi-actor applications with LLMs"
 authors = []
 requires-python = ">=3.9"

libs/langgraph/uv.lock

@@ -1428,7 +1428,7 @@ wheels = [
 
 [[package]]
 name = "langgraph"
-version = "0.6.8"
+version = "0.6.9"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },

libs/prebuilt/uv.lock

@@ -257,7 +257,7 @@ wheels = [
 
 [[package]]
 name = "langgraph"
-version = "0.6.8"
+version = "0.6.9"
 source = { editable = "../langgraph" }
 dependencies = [
     { name = "langchain-core" },