Update duckdb index files

.gitattributes

@@ -95,3 +95,4 @@ swiss_law_area_prediction_sub_area_facts/validation/index.duckdb filter=lfs diff
 swiss_law_area_prediction_sub_area_considerations/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 swiss_law_area_prediction_facts/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 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_subject/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:233f82e7970f2eacc870d4cd588fbda9a2f3fe22880dddadcfc64d207c2c42c0
+size 78917632