Update duckdb index files

.gitattributes

@@ -89,3 +89,4 @@ cs_ja/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ar_ko/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_en/sampled_test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ar_ru/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

ar_ru/sampled_validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8fc00d5cf169b5c68f9873ed2aa1cf9e03ad18ecd92f184987b694ef3a493852
+size 34091008