Update duckdb index files

.gitattributes

@@ -87,3 +87,4 @@ pl/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sl/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ro/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es/partial-test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+es/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

es/partial-validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7e6ad0718784e50c849ed28dc9773b089eb0523752ff956087d8acbb09a2b570
+size 652750848