Use type hinting generics in standard collections (#19046)

aka PEP 585, added in Python 3.9

 - https://peps.python.org/pep-0585/
 - https://docs.astral.sh/ruff/rules/non-pep585-annotation/

tests/module_api/test_api.py

@@ -18,7 +18,7 @@
 # [This file includes modifications made by New Vector Limited]
 #
 #
-from typing import Any, Dict, Optional
+from typing import Any, Optional
 from unittest.mock import AsyncMock, Mock
 
 from twisted.internet import defer
@@ -839,7 +839,7 @@ class ModuleApiWorkerTestCase(BaseModuleApiTestCase, BaseMultiWorkerStreamTestCa
         presence.register_servlets,
     ]
 
-    def default_config(self) -> Dict[str, Any]:
+    def default_config(self) -> dict[str, Any]:
         conf = super().default_config()
         conf["stream_writers"] = {"presence": ["presence_writer"]}
         conf["instance_map"] = {