Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ arbml--CEAP/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 arbml--CEAP/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 arbml--CEAP/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
+default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f9e9dee60d35e275b5ad537b056abd89b5918a40f3101d9c1f7f98e3c0a9ae8d
+size 3944448