Update duckdb index files

.gitattributes

@@ -52,3 +52,4 @@ 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
+Omnibus--blockchain-tree/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Omnibus--blockchain-tree/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:06c7442586f9ff58e7a8e2c66e7675956686529a1d9f09bd50323475a45efd26
+size 1060864