Update duckdb index files

.gitattributes

@@ -52,3 +52,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+LangChainDatasets--llm-math/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

LangChainDatasets--llm-math/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0bd58edbc750c94e72e297fa223f2bfb0e3074d413c58d87bd328ba878fce24b
+size 1060864