feat: make Channel::server return a reference

crates/delta/src/routes/channels/channel_delete.rs

@@ -55,7 +55,7 @@ pub async fn delete(
 
     for user_id in get_voice_channel_members(channel.id()).await? {
         voice_client.remove_user(&user_id, channel.id()).await?;
-        delete_voice_state(channel.id(), channel.server().as_deref(), &user.id).await?;
+        delete_voice_state(channel.id(), channel.server(), &user.id).await?;
     };
 
     Ok(EmptyResponse)

crates/delta/src/routes/channels/permissions_set_default.rs

@@ -76,7 +76,7 @@ pub async fn set_default_permissions(
     }
 
     let server = match channel.server() {
-        Some(server_id) => Some(Reference::from_unchecked(server_id).as_server(db).await?),
+        Some(server_id) => Some(Reference::from_unchecked(server_id.to_string()).as_server(db).await?),
         None => None
     };
 

crates/delta/src/routes/servers/member_edit.rs

@@ -157,8 +157,8 @@ pub async fn edit(
         roles,
         timeout,
         remove,
-        mut can_publish,
-        mut can_receive,
+        can_publish,
+        can_receive,
         voice_channel,
     } = data;