fix get_wrapper

Author: Vizonex

stubs/cysqlite/cysqlite/aio.pyi

@@ -108,7 +108,7 @@ class AsyncCursor:
 class _AsyncTransactionWrapper:
     conn: AsyncConnection
     def __init__(self, conn: AsyncConnection, *args: Any) -> None: ...
-    def get_wrapper(self) -> None: ...
+    def get_wrapper(self) -> Any: ...
     async def __aenter__(self) -> Self: ...
     async def __aexit__(
         self, exc_type: type[BaseException] | None, exc_val: BaseException | None, exc_tb: types.TracebackType | None