Update duckdb index files

.gitattributes

@@ -164,3 +164,4 @@ computer_architecture/val/index.duckdb filter=lfs diff=lfs merge=lfs -text
 computer_architecture/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 computer_architecture/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 fire_engineer/val/index.duckdb filter=lfs diff=lfs merge=lfs -text
+high_school_mathematics/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

high_school_mathematics/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1909ca108939075cddaaec4977bef293504a3539fb3657a0a1556eb2c8cc6d01
+size 1060864