Update duckdb index files

.gitattributes

@@ -112,3 +112,4 @@ logic/val/index.duckdb filter=lfs diff=lfs merge=lfs -text
 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/dev/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:04d45983732b7cd50428b3fed7dad7fa3017af270522a433e23b24debb512a9d
+size 1060864