Update duckdb index files

.gitattributes

@@ -1068,3 +1068,4 @@ ar_fr/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ar_ja/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ar_ko/sampled_test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ar_pt/sampled_test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+cs_en/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

cs_en/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2529980220ba55def1819eb9e8a7c89a6713ed63ee9519255c3f613e3873767d
+size 29896704