Update duckdb index files

.gitattributes

@@ -109,3 +109,4 @@ es_other/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 et_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_contracts/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 da_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+el_wikipedia/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

el_wikipedia/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:87bf6cbf3f5bb0c13fc9ed3aae089a9acba3a1bdfa437113ca475f86cc5e891c
+size 6041600