Update duckdb index files

.gitattributes

@@ -60,3 +60,4 @@ minority_examples/validation_matched.biased/index.duckdb filter=lfs diff=lfs mer
 minority_examples/validation_mismatched.anti_biased/index.duckdb filter=lfs diff=lfs merge=lfs -text
 minority_examples/validation_mismatched.biased/index.duckdb filter=lfs diff=lfs merge=lfs -text
 partial_input/train.anti_biased/index.duckdb filter=lfs diff=lfs merge=lfs -text
+partial_input/train.biased/index.duckdb filter=lfs diff=lfs merge=lfs -text

partial_input/train.biased/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b82ccee7c05eff2b178d46594b61acd0e2351815894d306121657e43829c888c
+size 67907584