Update duckdb index files

.gitattributes

@@ -69,3 +69,4 @@ default/funcodec_en_libritts_16k_nq32ds320/index.duckdb filter=lfs diff=lfs merg
 default/funcodec_en_libritts_16k_gr8nq32ds320/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/funcodec_en_libritts_16k_nq32ds640/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/funcodec_zh_en_16k_nq32ds320/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/funcodec_zh_en_16k_nq32ds640/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/funcodec_zh_en_16k_nq32ds640/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bbcfbe613d1b8d45f9e82e6675a7222e56fb8d8fb8320bdb913c871c9e154c15
+size 3212849152