Update duckdb index files

.gitattributes

@@ -52,3 +52,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+swaption2009--20k-en-zh-translation-pinyin-hsk/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

swaption2009--20k-en-zh-translation-pinyin-hsk/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7be69fce450bcfd16bf2bec9cd831d4cd6604e99d74c16deb4354958e418d74e
+size 7614464