Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ arbml--ANAD/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 arbml--ANAD/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 arbml--ANAD/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:e1a75c755a6b4c98779ac755318ce5ec44b48ee4296b32414d251c21c8f37254
+size 24915968