Update duckdb index files

.gitattributes

@@ -80,3 +80,4 @@ da_contracts/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 de_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 da_wikipedia/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+el_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

el_caselaw/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5488d4de5b1612f0c7c882f99ea99b564075ff6f76f5a954f36471dd50c172a2
+size 4730880