Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ Mihir1108--Aspire/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Mihir1108--Aspire/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ae871a5d5e4ba3439168b5e652377463ee37e53abdafb4ea38731fa33fd77a0a
+size 154939392