Update duckdb index files

.gitattributes

@@ -313,3 +313,4 @@ voidful--commonvoice_10_unit/vot.train/index.duckdb filter=lfs diff=lfs merge=lf
 voidful--commonvoice_10_unit/yue.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/yue.train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/yue.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+voidful--commonvoice_10_unit/zh_CN.test/index.duckdb filter=lfs diff=lfs merge=lfs -text

voidful--commonvoice_10_unit/zh_CN.test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:addce3d3ac99da3345e2cf5d41cede9b19a82e88f49c95d83096298f18eac317
+size 8400896