Update duckdb index files

.gitattributes

@@ -25,3 +25,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zstandard filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
+bg-all-question/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

bg-all-question/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a25660c76a3c240f1d8761dd76b202517a1d9b6c326bb2b5634a8c9ff18469a6
+size 182202368