Update duckdb index files

.gitattributes

@@ -99,3 +99,4 @@ default/random_4_test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/random_4_train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/random_4_val/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/scaffold_0_test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/scaffold_0_train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/scaffold_0_train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df7c2cb3a8f7454eeee1ed1e5153af7790196bff46371f9fb323046b88c4bfd3
+size 1323008