Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ VSPuzzler--input/json-train.parquet filter=lfs diff=lfs merge=lfs -text
 VSPuzzler--input/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 VSPuzzler--input/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 sha256:2b6a4e354bc7c9ac5a9a180ed7c8da7f5f6c6ff6f3993156588ae7556796188e
+size 12333056