Update duckdb index files

.gitattributes

@@ -62,3 +62,4 @@ default/audiodec_24k_320d/partial-index.duckdb filter=lfs diff=lfs merge=lfs -te
 default/dac_16k/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/funcodec_en_libritts_16k_nq32ds320/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/original/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/funcodec_en_libritts_16k_nq32ds640/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text

default/funcodec_en_libritts_16k_nq32ds640/partial-index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:444e9dfe3bf00d9972db8bd2a9a3ae691b0d6a63a9fe3f9fbbacd54e63fa2405
+size 5100023808