Update duckdb index files

.gitattributes

@@ -61,3 +61,4 @@ default/dac_16k/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/audiodec_24k_320d/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/dac_24k/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/encodec_24k_12bps/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/encodec_24k_3bps/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text

default/encodec_24k_3bps/partial-index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:129c8983ee52c0358a705df6b74af296dc232f9f3659440acf07eb269e0cab3d
+size 3753914368