Update duckdb index files

Kamaljp--xsum_3000/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:4bcdc4fc762eabc853588a158f7462d3e4ec3d6a0209ea70b1a4bd4b8ef0e6ab
-size 15216640
+oid sha256:8b52419dc48b8ec28c0ace83f0ebe8850911326ce65f00e5bfe3af6574a53f6d
+size 15740928