fix: reorder imports for consistency in jwt.py and test_jwt.py

Author: iamdhakrey

jose/jwt.py

@@ -5,7 +5,8 @@
     from collections.abc import Mapping
 except ImportError:
     from collections import Mapping
-from datetime import datetime, timedelta, UTC
+
+from datetime import UTC, datetime, timedelta
 
 from jose import jws
 

tests/test_jwt.py

@@ -1,6 +1,6 @@
 import base64
 import json
-from datetime import datetime, timedelta, UTC
+from datetime import UTC, datetime, timedelta
 
 import pytest