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

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

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df80b0a6e3db7560ef8cfac9abce4d6bdbea29e122df70c116392777368d0955
+size 3682304