Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ MrbBakh--Amazon/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 MrbBakh--Amazon/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 MrbBakh--Amazon/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/test/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:d66bcacfac9317399e5acb5ab1b9a974f5ccc2d304225611a8b93202cb124ef7
+size 22818816