Update duckdb index files

.gitattributes

@@ -334,3 +334,4 @@ default/as.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/ab.train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/as.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/ba.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/ba.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/ba.validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:66dfda1dd680834eb47d32709793fe06a9c998b1c398d19a520a83f68a74f8eb
+size 9449472