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
+abross--channel-metadata/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

abross--channel-metadata/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2cd75e85c2b18e2eb61bda54fb96434dee47bb73eab8dc19497de56c3ec965bd
+size 1323008