Update duckdb index files

Kamaljp--xsum_3000/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d105a977aca5041783a126fe6bfdc304befc5f463411cbeb83f41bc7247b5ed9
-size 15478784
+oid sha256:4bcdc4fc762eabc853588a158f7462d3e4ec3d6a0209ea70b1a4bd4b8ef0e6ab
+size 15216640