style: ruff format and the lint rules of the driver standard

Mechanical: ruff format, and ruff check --fix with the rule set every NAPALM
driver uses (E, F, I, UP, B at line length 100, Python 3.10). What ruff
cannot fix comes in the next commit.

napalm_opnsense/virtual_ips.py

@@ -18,7 +18,7 @@ shape of the reading.
 from __future__ import annotations
 
 import ipaddress
-from typing import Any, Optional
+from typing import Any
 
 from napalm_device_types.models import VirtualIpDict
 
@@ -31,7 +31,7 @@ _CARP_STATES: dict[str, tuple[bool, bool]] = {
 }
 
 
-def _address(text: str) -> Optional[tuple[str, Optional[int]]]:
+def _address(text: str) -> tuple[str, int | None] | None:
     """``"10.0.0.1/24"`` -> ``("10.0.0.1", 24)``; None for what is no address."""
     host, slash, prefix = text.partition("/")
     try:
@@ -48,12 +48,12 @@ def _address(text: str) -> Optional[tuple[str, Optional[int]]]:
 def carp_virtual_ip(
     *,
     address: str,
-    prefix_length: Optional[int],
+    prefix_length: int | None,
     vhid: object,
-    state: Optional[str],
+    state: str | None,
     instance: str,
-    interface: Optional[str],
-) -> Optional[VirtualIpDict]:
+    interface: str | None,
+) -> VirtualIpDict | None:
     """One address bound to a CARP VHID, as a virtual IP; None for what is no address.
 
     Who holds it comes from CARP's *state* on this member, not from its