Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ default/academicodec_hifi_16k_320d/index.duckdb filter=lfs diff=lfs merge=lfs -t
 default/academicodec_hifi_16k_320d_large_uni/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/academicodec_hifi_24k_320d/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/audiodec_24k_320d/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 sha256:0cff91bba4998e038a22ce91eafd4b622ddc7d6026097b3984467373c32a0ad9
+size 17313792