Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 TableQAKit--WTQ/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 TableQAKit--WTQ/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/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 sha256:37b2ba9fcda9d01b88e7f6190c22f027acf474c18efd825e2ff7909fddee8837
+size 70529024