Update duckdb index files

.gitattributes

@@ -85,3 +85,4 @@ el_other/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en_all/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+bg_wikipedia/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

bg_wikipedia/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:44f390179c74d1a47b306633edc0f752f5bb0e264410e54b112ad0cb62cd0b0d
+size 4993024