Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/partial-validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1968d75ca49dcd3ad7041331a8657db84b7ecacdea3b4e25ca0739535195bd67
+size 7312519168