Fix typing issues with group DM nicknames

discord/state.py

@@ -2322,7 +2322,7 @@ class ConnectionState:
         user = self.store_user(data['user'])
         channel.recipients.append(user)  # type: ignore
         if 'nick' in data:
-            channel.nicks[user] = data['nick']
+            channel.nicks[user] = data['nick']  # type: ignore
         self.dispatch('group_join', channel, user)
 
     def parse_channel_recipient_remove(self, data: gw.ChannelRecipientEvent) -> None:

discord/types/channel.py

@@ -22,7 +22,7 @@ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.
 """
 
-from typing import Dict, List, Literal, Optional, TypedDict, Union
+from typing import List, Literal, Optional, TypedDict, Union
 from typing_extensions import NotRequired
 
 from .user import PartialUser