fix: explicitly return * in Patch queries

This is needed because the API takes the object from the database query to return to the user

PluralKit.Core/Database/Repository/ModelRepository.Account.cs

@@ -10,7 +10,7 @@ namespace PluralKit.Core
         {
             _logger.Information("Updated account {accountId}: {@AccountPatch}", id, patch);
             var query = patch.Apply(new Query("accounts").Where("uid", id));
-            await _db.ExecuteQuery(query);
+            await _db.ExecuteQuery(query, extraSql: "returning *");
         }
     }
 }