Update duckdb index files

generalization--test/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:14030c8349bb5a076ef8677d141fd4b5bb44e70b175b2cbc1135e1ef8ea1ec5a
-size 2895872
+oid sha256:4b2d90f1c513c3867c848f0a6f451480d05aed87fec76e737651a9de27fc85af
+size 2633728