Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+rusano--ELI5_custom/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

rusano--ELI5_custom/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e37bdea0794caf1d33c8e6d8f025d9b5923d0acdf25c7e8559c45b9ca3a8d578
+size 4993024