Update duckdb index files

.gitattributes

@@ -47,3 +47,4 @@ bg-fr/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg-hu/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg-it/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg-lt/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+bg-lv/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

bg-lv/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:085bebd9112cb56ad475471a184df28c5dc900ac65201cce5913c1779dac9ef8
+size 81539072