Update duckdb index files

.gitattributes

@@ -1231,3 +1231,4 @@ tg/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tr/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tr/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 am/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ceb/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

ceb/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:84b0e79b0cd2876b1ff5d6b8c0fba0da8d590e45a1d7d7abab415131b1cae53e
+size 1888497664