Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ bg-pt/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg-ro/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg-sk/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg-sl/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+bg-sv/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

bg-sv/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1107989b0b94272c444d0b07034ceab1a737e9ad341ad44f9879fd0038b643c2
+size 79179776