Update duckdb index files

.gitattributes

@@ -990,3 +990,4 @@ ku/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ru-Latn/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 zu/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ku/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+gd/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

gd/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:41e5a3afb72e7974e7dd1b32d0eca0cd0c9158ed5a53cb8c053761b7d8491b0c
+size 1879322624