Update duckdb index files

.gitattributes

@@ -63,3 +63,4 @@ multiple_choice_sentiment_task/train/index.duckdb filter=lfs diff=lfs merge=lfs
 multiple_choice_facts_truefalse_balanced_task/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 multiple_choice_grounded_statement_soqal_task/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 multiple_choice_grounded_statement_xglue_mlqa_task/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+multiple_choice_openbookqa_translated_task/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

multiple_choice_openbookqa_translated_task/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d05a959e1dae193e6ed86708082c14ffb8ba068d64321b07287a0ae3fd56ef9f
+size 1060864