Update duckdb index files

default/{test → train}/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:1e0486858c5955d119b4cb46f654216ef83c72f228ad51400ba695e7e7004429
-size 30945280
+oid sha256:06b0b525a36bc1e7bfc07cf9959edec0a466d6cff0f6c03f0076cd9942224f63
+size 29110272