Update duckdb index files

.gitattributes

@@ -66,3 +66,4 @@ utterance_embeddings/aru/index.duckdb filter=lfs diff=lfs merge=lfs -text
 datasets/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 speaker_embeddings/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 dataset_utterances/aru/index.duckdb filter=lfs diff=lfs merge=lfs -text
+dataset_utterances/cmu_arctic/index.duckdb filter=lfs diff=lfs merge=lfs -text

dataset_utterances/cmu_arctic/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d604391e4086ba7b3a403a85d0531c06e217b1fc901dcc4652d62e09813a10c8
+size 1060864