Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+default/encodec_24k_6bps/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/encodec_24k_6bps/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4a4814a8dd86c46dbc557a72121e6d5c44918a49bdb76bf36fddebba06ce4aaa
+size 154415104