Update duckdb index files

.gitattributes

@@ -254,3 +254,4 @@ en-cqa-page/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 de-faq-page/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ja-all-question/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ja-faq-page/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+vi-faq-question/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

vi-faq-question/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:95646a6c4c06556ce6d1125948dbb2ff28fd7e20bf6a21977d6b4abc7c0748c6
+size 2350395392