Update duckdb index files

.gitattributes

@@ -41,3 +41,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.wav filter=lfs diff=lfs merge=lfs -text
 train_combined.csv filter=lfs diff=lfs merge=lfs -text
 dev_combined.csv filter=lfs diff=lfs merge=lfs -text
+ben-yu--ms2_combined/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

ben-yu--ms2_combined/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4d23bbe2877aa1797e2c421469b05ad6e5a136cafd1e125b35249e5175d1f35a
+size 506212352