Update duckdb index files

.gitattributes

@@ -118,3 +118,4 @@ cs_de/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ar_ko/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 fr_id/sampled_test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 fr_ja/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+cs_it/sampled_test/index.duckdb filter=lfs diff=lfs merge=lfs -text

cs_it/sampled_test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b48befd11253705a2b21802d3cda150a6b123d34df706de75f4f3c29401c5796
+size 50081792