Update duckdb index files

.gitattributes

@@ -30,3 +30,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 48K_mp3_nynorsk/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 48K_mp3_nynorsk/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 16K_mp3/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+16K_mp3/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

16K_mp3/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9fcf84a91db8dfe6bf9dd3d7a199b4c27695b1e0aa00fa69d144812e16bb8729
+size 323235840