Update duckdb index files

.gitattributes

@@ -80,3 +80,4 @@ yor/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 yor/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 yor/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 zul/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+zul/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

zul/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cf8ec9f516486630af508f15779737efad5a267cc8a16796a7c2002bbe90ccd9
+size 1060864