Update duckdb index files

.gitattributes

@@ -340,3 +340,4 @@ de_other/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 de_wikipedia/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 el_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 da_contracts/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+el_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

el_contracts/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:32287a1fcfc299b6d20663ae3c4496823ca086b38c6d7c498c2d22c7229e4d3f
+size 11022336