Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 minority_examples/train.anti_biased/index.duckdb filter=lfs diff=lfs merge=lfs -text
 minority_examples/train.biased/index.duckdb filter=lfs diff=lfs merge=lfs -text
+minority_examples/validation.anti_biased/index.duckdb filter=lfs diff=lfs merge=lfs -text

minority_examples/validation.anti_biased/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:da5598e0619ba96c1d2d144e5f0babc89c6479c56f2ad197d7d6a01e126a57af
+size 1847296