Update duckdb index files

.gitattributes

@@ -81,3 +81,4 @@ AsakusaRinne--Gaokao_bench/train/index.duckdb filter=lfs diff=lfs merge=lfs -tex
 2010-2022_Math_I_MCQs/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 2010-2022_Physics_MCQs/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 2012-2022_English_Cloze_Test/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
+2010-2022_Political_Science_MCQs/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text

2010-2022_Political_Science_MCQs/dev/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fee744a7a008b3ed346e8136f251db0f82654e983fe98e29bcd367ea41e8c7dc
+size 1060864