Update duckdb index files

.gitattributes

@@ -83,3 +83,4 @@ default/encodec_24k_1_5bps/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/funcodec_en_libritts_16k_gr8nq32ds320/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/funcodec_en_libritts_16k_nq32ds320/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/encodec_24k_3bps/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/encodec_24k_3bps/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6c897e1e6164c467539364c4ca95bef5b922a289a89ca12f9cdcf525ceecf833
+size 1578905600