Update duckdb index files

Tuana--presidents/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:7baf45ee9be5680547aee118bd91aef2adf30b0445a31d1c15e91ee24bbfade6
-size 20983808
+oid sha256:381d5c497c22f4c037bc4f861fc78d346d6a4b79c58438336a52a1170812a638
+size 20721664