dep: update knowledge-store in langchain (#553)

* dep: update knowledge-store in langchain

* revert version change

Author: bjchambers

libs/langchain/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "ragstack-ai-langchain"
-version = "1.3.0"
+version = "1.2.0"
 description = "DataStax RAGStack Langchain"
 license = "BUSL-1.1"
 authors = ["DataStax"]
@@ -15,7 +15,7 @@ astrapy = "^1"
 cassio = "~0.1.4"
 unstructured = "0.14.5"
 ragstack-ai-colbert = { version = "1.0.5", optional = true }
-ragstack-ai-knowledge-store = { version = "0.0.6", optional = true }
+ragstack-ai-knowledge-store = { version = "0.1.0", optional = true }
 
 # langchain
 langchain = "0.2.5"