Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 foyez--pake-2000/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 foyez--pake-2000/test/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:cdafa51c263478201e8ede01901349ded4e59479411efb9a38cec569df9642ba
+size 1323008