Update duckdb index files

.gitattributes

@@ -207,3 +207,4 @@ voidful--commonvoice_10_unit/mk.train/index.duckdb filter=lfs diff=lfs merge=lfs
 voidful--commonvoice_10_unit/ml.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/ml.train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/mn.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+voidful--commonvoice_10_unit/mn.train/index.duckdb filter=lfs diff=lfs merge=lfs -text

voidful--commonvoice_10_unit/mn.train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7e3970f8e51dd324e95688ef523ddc0cf92daf073b4f16f96f03c8231425abc4
+size 2371584