Update duckdb index files

maximalmargin--mitchell/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:f2f2afc500032dd3c359f75c17ea4c8a47779117ce9b0d775c879713bd539b7d
-size 23080960
+oid sha256:50b8b13500ccec73b7916fcbadf6b0d5d638c7cc03322dbe2d3a14d993155d71
+size 51916800