Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 mteb--scidocs-reranking/json-test.parquet filter=lfs diff=lfs merge=lfs -text
 mteb--scidocs-reranking/json-validation.parquet filter=lfs diff=lfs merge=lfs -text
 mteb--scidocs-reranking/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+mteb--scidocs-reranking/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

mteb--scidocs-reranking/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3a424044d80f2f0f3940dd2cd7159397defa0e07a1ee05654c3edb4af65ec2f0
+size 6303744