Update duckdb index files

.gitattributes

@@ -73,3 +73,4 @@ voidful--commonvoice_10_unit/bas.validation/index.duckdb filter=lfs diff=lfs mer
 voidful--commonvoice_10_unit/be.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/be.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/bg.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+voidful--commonvoice_10_unit/bg.train/index.duckdb filter=lfs diff=lfs merge=lfs -text

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

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cbc8b34ebdf6ca382e613e5c0e0f609b787980890b9e8fd35a903dde33993c2d
+size 2895872