fix new mypy complaints

certbot-apache/certbot_apache/_internal/apacheparser.py

@@ -118,7 +118,8 @@ class ApacheBlockNode(ApacheDirectiveNode):
 
     # pylint: disable=unused-argument
     def add_child_directive(self, name: str, parameters: Optional[List[str]] = None,
-                            position: int = None) -> ApacheDirectiveNode:  # pragma: no cover
+                            position: Optional[int] = None
+    ) -> ApacheDirectiveNode:  # pragma: no cover
         """Adds a new DirectiveNode to the sequence of children"""
         new_dir = ApacheDirectiveNode(name=assertions.PASS,
                                       parameters=assertions.PASS,

certbot-apache/certbot_apache/_internal/configurator.py

@@ -812,7 +812,7 @@ class ApacheConfigurator(common.Configurator):
         return self._find_best_vhost(target, filtered_vhosts, filter_defaults)
 
     def _find_best_vhost(
-        self, target_name: str, vhosts: List[obj.VirtualHost] = None,
+        self, target_name: str, vhosts: Optional[List[obj.VirtualHost]] = None,
         filter_defaults: bool = True
     ) -> Optional[obj.VirtualHost]:
         """Finds the best vhost for a target_name.