Update duckdb index files

.gitattributes

@@ -71,3 +71,4 @@ default/funcodec_en_libritts_16k_nq32ds640/index.duckdb filter=lfs diff=lfs merg
 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/speech_tokenizer_16k/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/encodec_24k_1_5bps/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/encodec_24k_1_5bps/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5bd4d71cf366d27cd2a51f04da1a42f29ca67ef672809bf8447e215d8e8f31f9
+size 1847296