Update duckdb index files

.gitattributes

@@ -66,3 +66,4 @@ default/encodec_24k_6bps/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/funcodec_en_libritts_16k_gr1nq32ds320/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/encodec_24k_3bps/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 sha256:5bb93bfebdce60c2d7ee6fc543b79d8ee7c1235670f8c857abec7a26601784a3
+size 2895872