Update duckdb index files

.gitattributes

@@ -67,3 +67,4 @@ AsakusaRinne--Gaokao_bench/train/index.duckdb filter=lfs diff=lfs merge=lfs -tex
 2010-2022_Math_I_MCQs/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 2010-2022_Physics_MCQs/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 2010-2022_Political_Science_MCQs/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+2012-2022_English_Cloze_Test/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

2012-2022_English_Cloze_Test/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:62e1e8a5279f075ac503e10dd2ec624dc01e44fcf4f47ace5bfad5aa5cf4bf86
+size 1060864