Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/train/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
 written/train/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
+spoken/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text

spoken/partial-train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f0b051822f54cae87973b4492f2733393a37f6ee5e63dd6c4b2319a84fcf7830
+size 5402537984