Improve typing

(cherry picked from commit af5bc45)

Author: DarthMax

graphdatascience/query_runner/standalone_session_query_runner.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Any, Optional
 
 from pandas import DataFrame
@@ -75,5 +77,5 @@ def last_bookmarks(self) -> Optional[Any]:
     def set_server_version(self, _: ServerVersion) -> None:
         super().set_server_version(_)
 
-    def clone(self, host: str, port: int) -> "QueryRunner":
+    def clone(self, host: str, port: int) -> QueryRunner:
         return self

graphdatascience/tests/unit/conftest.py

@@ -126,7 +126,7 @@ def create_graph_constructor(
             self, graph_name, concurrency, undirected_relationship_types, self._server_version
         )
 
-    def clone(self, host: str, port: int) -> "QueryRunner":
+    def clone(self, host: str, port: int) -> QueryRunner:
         return self
 
     def set__mock_result(self, result: DataFrame) -> None: