Update duckdb index files

.gitattributes

@@ -289,3 +289,4 @@ cs_pt/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_pt/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_pt/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_ru/sampled_test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+cs_ru/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

cs_ru/sampled_validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:08dd0a857d7b118fb8657a5d1d0de876a868b4afab9fe7ba5032bb42311d3c14
+size 24391680