Update duckdb index files

Tuana--presidents/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:96afbe3c0eed6c2de4afde3577854b6eaf81fcc041504b95eaf53db4c79b1e40
-size 20721664
+oid sha256:7baf45ee9be5680547aee118bd91aef2adf30b0445a31d1c15e91ee24bbfade6
+size 20983808