Update duckdb index files

Kamaljp--xsum_3000/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:8b52419dc48b8ec28c0ace83f0ebe8850911326ce65f00e5bfe3af6574a53f6d
-size 15740928
+oid sha256:1e15fc8ac895be91cdf487f26b3301d4b5ed20b086121130bf8290609799900b
+size 15478784