Update duckdb index files

pretrain-unlabeled/test/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:2c272cba73f5481bcd84ebc9c9e4e5e41d8bbcc6d051d97f311bd14fa26a97c6
-size 4730880
+oid sha256:ba513b21972371a027cfeba5975d57f50bc2249a54443b8c3001dea64211e229
+size 4993024