Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 apsys--vc-pitches/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 apsys--vc-pitches/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 apsys--vc-pitches/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 sha256:191c41463903f1cfa963492d3ac014bc0a8fdc594dccfde92e4be7ba87262740
+size 1060864