Update duckdb index files

.gitattributes

@@ -67,3 +67,4 @@ bn/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 gu/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 hi/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ig/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+lg/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

lg/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:be6208495718e546ae8c138ed15ca14e6226ae79e042eae61ba2699aa431932a
+size 341585920