Update duckdb index files

.gitattributes

@@ -1278,3 +1278,4 @@ zh/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 is/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sv/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+eo/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

eo/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7f0f7c0750013ec43a01ef65f9eb058cfa73555a8a94f5d3cef39275bd8737f6
+size 4650446848