Update duckdb index files

pietrolesci--dnc/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:912a2d7bd51a788612f498725a1e8fa8ffea5b158c965889246e39793e7ef1aa
-size 25178112
+oid sha256:035c2f8b617dbeae7b916439e3d0f01834bfbb9e1874a7d00596f3bf32da3426
+size 24653824