Update duckdb index files

.gitattributes

@@ -3,3 +3,4 @@ Goud--Goud-sum/csv-test.parquet filter=lfs diff=lfs merge=lfs -text
 Goud--Goud-sum/csv-validation.parquet filter=lfs diff=lfs merge=lfs -text
 Goud--Goud-sum/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Goud--Goud-sum/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Goud--Goud-sum/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Goud--Goud-sum/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d2d49e6d58dc365dde6e89c44f415a876b3211525e2152e86313fa4eba1be876
+size 395849728