Update duckdb index files

.gitattributes

@@ -251,3 +251,4 @@ ar_zh/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ar_nl/sampled_test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ar_nl/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ar_nl/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ar_nl/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

ar_nl/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd7e44f0c534294faa7595c886d00e5e54876aff5431d3dd8ff4aa153165f3f3
+size 60305408