Update duckdb index files

nayohan--piqa-ko/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d552f8c959cad6117bad1f934e94a8b7e756fef0bba1d62bc37971ed5f4d1c7c
-size 5517312
+oid sha256:5cd71bdf82e121ef29e9f429918f820bc0efbd0df9e1281d2f216bd69712df00
+size 4730880