small corrections

src/python_encrypt_code/password_provider/password_provider.py

@@ -4,7 +4,6 @@ import os
 import json
 import base64
 import secrets
-from typing import Tuple
 
 from .password_provider_interface import PasswordProviderInterface
 
@@ -30,7 +29,7 @@ class PasswordProviderExample(PasswordProviderInterface):
         return url_safe_string
 
     @classmethod
-    def get_decryption_keys(cls) -> Tuple[str, dict[str, str] | None]:
+    def get_decryption_keys(cls) -> tuple[str, dict[str, str] | None]:
         """Placeholder function to get decryption keys. Implement your own logic here.
 
         Returns:

src/python_encrypt_code/password_provider/password_provider_interface.py

@@ -1,6 +1,5 @@
 """Definition of PasswordProviderInterface."""
 
-from typing import Tuple
 from abc import ABC, abstractmethod
 
 
@@ -18,7 +17,7 @@ class PasswordProviderInterface(ABC):
 
     @classmethod
     @abstractmethod
-    def get_decryption_keys(cls) -> Tuple[str, dict[str, str] | None]:
+    def get_decryption_keys(cls) -> tuple[str, dict[str, str] | None]:
         """Get decryption keys for decryption.
 
         Returns: