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.

tests/test_ovs_and_arp.py

@@ -2,12 +2,10 @@
 
 from __future__ import annotations
 
-import pytest
 from unittest.mock import patch
 
 from napalm_proxmox import utils
 
-
 PROC_NET_ARP = """\
 IP address       HW type  Flags  HW address          Mask   Device
 10.0.0.254       0x1      0x2    aa:bb:cc:dd:ee:ff   *      eth0
@@ -137,10 +135,7 @@ class TestGetMACAddressTable:
         "cc:dd:ee:ff:00:11 dev eth0 vlan 20 master vmbr0\n"
     )
 
-    OVS_APPCTL = (
-        " LOCAL     0  aa:bb:cc:dd:ee:03    0\n"
-        "     1    10  11:22:33:44:55:66  100\n"
-    )
+    OVS_APPCTL = " LOCAL     0  aa:bb:cc:dd:ee:03    0\n     1    10  11:22:33:44:55:66  100\n"
 
     def test_linux_bridge_entries(self, driver):
         def _exec(cmd):