Update duckdb index files

.gitattributes

@@ -58,3 +58,4 @@ valid.csv filter=lfs diff=lfs merge=lfs -text
 wza--USTT/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 wza--USTT/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 wza--USTT/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cf2594a5d8bbc8b1c5489cc81647cf51eef5fad0c12444328a439c0cd6f65977
+size 10235904