Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 tasksource--robustLR/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+tasksource--robustLR/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

tasksource--robustLR/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:648bcd0cd6903cca2a970a16db4960f717a57e48137adbf9838cf1ef76f67fc1
+size 2371584