Fix QueryTriples __iter__ and __next__ return types

python/base.pyi

@@ -109,8 +109,8 @@ class QuerySolutions:
 
 class QueryTriples:
     def __init__(self, *args, **kwargs) -> None: ...
-    def __iter__(self) -> Triple: ...
+    def __iter__(self) -> QueryTriples: ...
-    def __next__(self) -> Term: ...
+    def __next__(self) -> Triple: ...
 
 class Store:
     def __init__(self, path: Optional[str] = None) -> None: ...