Update duckdb index files

.gitattributes

@@ -69,3 +69,4 @@ default/speech_tokenizer_16k/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/dac_44k/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_nq32ds640/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/encodec_24k_12bps/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/encodec_24k_12bps/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f9b2a1eac311546db8c56a1fdd8e01ed53ede7da145e1b03924912b6689546a8
+size 53751808