Update duckdb index files

.gitattributes

@@ -70,3 +70,4 @@ default/funcodec_en_libritts_16k_gr8nq32ds320/index.duckdb filter=lfs diff=lfs m
 default/funcodec_en_libritts_16k_nq32ds320/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 sha256:0ebf4b6395a3e8a833ed0b840222e27626845a598f81ad55be264d86aa3c6c46
+size 27799552