Update duckdb index files

.gitattributes

@@ -204,3 +204,4 @@ mao_zedong_thought/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 probability_and_statistics/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 high_school_physics/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 high_school_physics/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ideological_and_moral_cultivation/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text

ideological_and_moral_cultivation/dev/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e29184bc50c9e6b775c621efb514669da2bd90a21423701b6a1ad9d03422d8c3
+size 1060864