Update duckdb index files

.gitattributes

@@ -113,3 +113,4 @@ metrology_engineer/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 metrology_engineer/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 metrology_engineer/val/index.duckdb filter=lfs diff=lfs merge=lfs -text
 middle_school_chemistry/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
+middle_school_chemistry/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

middle_school_chemistry/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b9407724f25065a5ddb7c40d60b641390039a4e27a38ef80918c3c5bc6997a8d
+size 1060864