Update duckdb index files

.gitattributes

@@ -52,3 +52,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+20230601.ab/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

20230601.ab/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:155dc977f83d6945068f3516f5ff0d3b2cd649f42880704d5d0ab1286bd705a5
+size 5517312