remove pydantic from user_cipher_keys.py

src/user_cipher_keys.py

@@ -1,15 +1,14 @@
 import base64
 import hashlib
+from dataclasses import dataclass
 import bcrypt
 from secrets import choice
-from pydantic import BaseModel
-
 from src.models import EncipheredNKode, KeypadSize
 from src.customer_attributes import CustomerAttributes
 from src.utils import generate_random_nonrepeating_list, xor_lists, int_array_to_bytes
 
-
-class UserCipherKeys(BaseModel):
+@dataclass
+class UserCipherKeys:
     alpha_key: list[int]
     set_key: list[int]
     pass_key: list[int]