fix Ruff errors

rendercv/__main__.py

@@ -1,6 +1,5 @@
 import os
 import logging
-import re
 from typing import Annotated, Callable
 from functools import wraps
 

tests/test_cli.py

@@ -4,7 +4,7 @@ import shutil
 import subprocess
 import sys
 
-from rendercv import rendering, data_model
+from rendercv import data_model
 
 
 class TestCLI(unittest.TestCase):

tests/test_rendering.py

@@ -1,6 +1,5 @@
 import unittest
 import os
-import json
 from datetime import date
 import shutil