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
+jetesdal--langchain-docs/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

jetesdal--langchain-docs/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6eeb002f391cb16fcc141c009e7e97c6fc6036acf76fc6f662b6a412cf5c01ab
+size 8663040