Azure Linux: tweak dataclass for compatibility with python 3.12

[maxtropets]

Fixes:

56:   File "/usr/lib/python3.12/dataclasses.py", line 1268, in dataclass
56:     return wrap(cls)
56:            │    └ <class 'infra.interfaces.NodeByRoleResolver'>
56:            └ <function dataclass.<locals>.wrap at 0x7f6a3b28e160>
...
56:   File "/usr/lib/python3.12/dataclasses.py", line 852, in _get_field
56:     raise ValueError(f'mutable default {type(f.default)} for field '
56: ValueError: mutable default <class 'infra.interfaces.TargetRole'> for field target is not allowed: use default_factory

Part of #6588