Update duckdb index files

nahyeon00--stackoverflow/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:e9ea235eeb998238f55c6f307328114b6bfde0f612821948ba42d8555d086f38
-size 1847296
+oid sha256:81d06245594a5995b8dcec024ce40445ff3a750f281eedac1968d54ce0a005be
+size 1585152