Update duckdb index files

.gitattributes

@@ -3,3 +3,4 @@ nbroad--small_arxiv_classification/parquet-test.parquet filter=lfs diff=lfs merg
 nbroad--small_arxiv_classification/parquet-validation.parquet filter=lfs diff=lfs merge=lfs -text
 nbroad--small_arxiv_classification/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 nbroad--small_arxiv_classification/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+nbroad--small_arxiv_classification/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

nbroad--small_arxiv_classification/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b7b9c0b46643847afd233b339f29094bc37fe5e165fddecf0ab35dcda121eb59
+size 24915968