Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 nayohan--piqa-ko/valid/index.duckdb filter=lfs diff=lfs merge=lfs -text
 nayohan--piqa-ko/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09c228f44b54a0f7ad0f6569edfd2d55e4b0677c39c0e90a066bd9f19452876a
+size 3682304