Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 laamaai--ele-int/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 laamaai--ele-int/test/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 sha256:2696a62d087f57d91f58d27c42ab5cb8551b75e02d5c85fc4c15230343761fdb
+size 1323008