Update duckdb index files

.gitattributes

@@ -59,3 +59,4 @@ mustc/train/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
 mustc/valid/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tedlium/train/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text
 tedlium/valid/index.duckdb filter=lfs diff=lfs merge=lfs -text
+voxpopuli/train/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text

voxpopuli/train/partial-index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8850474fdb247d3bb918a5c6aacaeed83264ab72ee2469ce3db24b34ec706a04
+size 2702454784