Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 KLUE[[:space:]]Relation[[:space:]]Extraction/klue-re-train.parquet filter=lfs diff=lfs merge=lfs -text
 KLUE[[:space:]]Relation[[:space:]]Extraction/klue-re-validation.parquet filter=lfs diff=lfs merge=lfs -text
 KLUE[[:space:]]Relation[[:space:]]Extraction/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+KLUE[[:space:]]Relation[[:space:]]Extraction/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

KLUE Relation Extraction/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4c9e2fdda5a6cb42ce60f777bbbb042c690ef1672e859a36a2a8d87dcbc3f3fe
+size 3158016