Bump twisted from 22.10.0 to 23.8.0 (#16235)

* Bump twisted from 22.10.0 to 23.8.0

Bumps [twisted](https://github.com/twisted/twisted) from 22.10.0 to 23.8.0.
- [Release notes](https://github.com/twisted/twisted/releases)
- [Changelog](https://github.com/twisted/twisted/blob/trunk/NEWS.rst)
- [Commits](https://github.com/twisted/twisted/compare/twisted-22.10.0...twisted-23.8.0)

---
updated-dependencies:
- dependency-name: twisted
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* Fix types

* Fix lint

* Newsfile

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Erik Johnston <erik@matrix.org>

1 files changed, 2 insertions, 6 deletions

diff --git a/synapse/handlers/initial_sync.py b/synapse/handlers/initial_sync.py

index b3be7a86f0..5dc76ef588 100644
--- a/synapse/handlers/initial_sync.py
+++ b/synapse/handlers/initial_sync.py
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 import logging
-from typing import TYPE_CHECKING, List, Optional, Tuple, cast
+from typing import TYPE_CHECKING, List, Optional, Tuple
 
 from synapse.api.constants import (
     AccountDataTypes,
@@ -23,7 +23,6 @@ from synapse.api.constants import (
     Membership,
 )
 from synapse.api.errors import SynapseError
-from synapse.events import EventBase
 from synapse.events.utils import SerializeEventConfig
 from synapse.events.validator import EventValidator
 from synapse.handlers.presence import format_user_presence_state
@@ -35,7 +34,6 @@ from synapse.types import (
     JsonDict,
     Requester,
     RoomStreamToken,
-    StateMap,
     StreamKeyType,
     StreamToken,
     UserID,
@@ -199,9 +197,7 @@ class InitialSyncHandler:
                     deferred_room_state = run_in_background(
                         self._state_storage_controller.get_state_for_events,
                         [event.event_id],
-                    ).addCallback(
-                        lambda states: cast(StateMap[EventBase], states[event.event_id])
-                    )
+                    ).addCallback(lambda states: states[event.event_id])
 
                 (messages, token), current_state = await make_deferred_yieldable(
                     gather_results(