Update duckdb index files

.gitattributes

@@ -271,3 +271,4 @@ cs_fr/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_fr/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_id/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_id/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+cs_id/sampled_test/index.duckdb filter=lfs diff=lfs merge=lfs -text

cs_id/sampled_test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7ec4fabd8d0a67783ee8041a948a6fe6b4cbcb4a45b556593bbc338f5c32aff9
+size 49819648