Fix linter warning

internal/repository/index/indexmap_test.go

@@ -36,6 +36,7 @@ func TestIndexMapForeach(t *testing.T) {
 	var m indexMap
 
 	// Don't crash on empty map.
+	//nolint:revive // ignore empty iteration
 	for range m.values() {
 		// empty iteration
 	}