deps: bump ragstack-langchain to 1.0.7 (#453)

Author: nicoloboschi

pyproject.toml

@@ -11,7 +11,7 @@ packages = [{ include = "ragstack" }]
 
 [tool.poetry.dependencies]
 python = ">=3.9,<3.13"
-ragstack-ai-langchain = { version = "1.0.6", extras = ["colbert", "google", "nvidia"] }
+ragstack-ai-langchain = { version = "1.0.7", extras = ["colbert", "google", "nvidia"] }
 ragstack-ai-llamaindex = { version = "1.0.5", extras = ["colbert", "google", "azure", "bedrock"] }
 ragstack-ai-colbert = "1.0.5"