Update duckdb index files

.gitattributes

@@ -67,3 +67,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 3/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 4/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 4/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+4/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

4/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9abddd0d335c3d9fceaca8367f51aeff6c1c02ea6a96117cd66a7b88748911a2
+size 4206592