Update duckdb index files

.gitattributes

@@ -62,3 +62,4 @@ distribute_four/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 distribute_nine/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 distribute_nine/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 distribute_nine/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+in_center_single_out_center_single/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

in_center_single_out_center_single/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:29e249018f9f05784b0cd996a603a18ae2f262441905e6e9c9ded78f85d4f056
+size 52178944