Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 griffin--ChemSum/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+griffin--ChemSum/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

griffin--ChemSum/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6fd582c547829904892f7f015026707367b648e0843ceb167d0c361914b5c2e2
+size 34091008