Update duckdb index files

.gitattributes

@@ -84,3 +84,4 @@ voidful--commonvoice_10_unit/br.validation/index.duckdb filter=lfs diff=lfs merg
 voidful--commonvoice_10_unit/ca.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/ca.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/ckb.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+voidful--commonvoice_10_unit/ckb.train/index.duckdb filter=lfs diff=lfs merge=lfs -text

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

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e20e6595d888bcbf1a95f0c2759249c0d9406024cd982e5e4732b4a56d06e680
+size 4730880