Update duckdb index files

pietrolesci--mpe/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:9c9ed3d9d4fd9655d2a124b3c64160a2d1ccd7d33cdf418a6d636a04a68e5b3f
-size 7876608
+oid sha256:72608661d64fad8af242127f707b1383932ecc969061505a83524e6ff1c55fcb
+size 6565888