devel/py-loguru: unbreak tests after 94d99c56d4bc

ImportError while loading conftest '/wrkdirs/usr/ports/devel/py-loguru/work-py39/loguru-0.7.0/tests/conftest.py'.
tests/conftest.py:15: in <module>

import freezegun

E ModuleNotFoundError: No module named 'freezegun'

ImportError while importing test module '/wrkdirs/usr/ports/devel/py-loguru/work-py39/loguru-0.7.0/tests/test_type_hinting.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/local/lib/python3.9/importlib/__init__.py:127: in import_module

return _bootstrap._gcd_import(name[level:], package, level)

tests/test_type_hinting.py:1: in <module>

import mypy.api

E ModuleNotFoundError: No module named 'mypy'