Update duckdb index files

.gitattributes

@@ -160,3 +160,4 @@ college_chemistry/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 chinese_language_and_literature/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 college_chemistry/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 college_chemistry/val/index.duckdb filter=lfs diff=lfs merge=lfs -text
+computer_architecture/val/index.duckdb filter=lfs diff=lfs merge=lfs -text

computer_architecture/val/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a6f36e8f443362731837f7017b6f9104413734c1c213735aa596329b96af3a2b
+size 1060864