Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ arbml--BRAD/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 arbml--BRAD/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 arbml--BRAD/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 sha256:2dfd068e5e9265b29e33448c6196cf9b6f76636fe1718759884225e8a30f9f5b
+size 635187200