Update duckdb index files

.gitattributes

@@ -97,3 +97,4 @@ swiss_law_area_prediction_facts/train/index.duckdb filter=lfs diff=lfs merge=lfs
 greek_legal_code_chapter/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 greek_legal_code_subject/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 greek_legal_code_volume/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+multi_eurlex_level_1/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

multi_eurlex_level_1/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:47cac7b232727a54372e73665abe6aa5d162b5abe2cc0e8995eed1d5178c9798
+size 1271672832