fix: only require langgraph dependency for now (#218)

prebuilt is a dep of langgraph so we should just manage through that

bumping to v0.4.6 so that prebuilt is on >=0.2

hopefully not an issue long term as we look to consolidate prebuilts.

Author: sydney-runkle

pyproject.toml

@@ -14,8 +14,7 @@ license-files = ["LICENSE"]
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
-    "langgraph>=0.3.5",
-    "langgraph-prebuilt>=0.2.0",
+    "langgraph>=0.4.6",
     "langchain-core>=0.3.40"
 ]