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.

pyproject.toml

@@ -51,10 +51,14 @@ include = ["napalm_proxmox*"]
 
 [tool.ruff]
 line-length = 100
-target-version = "py39"
+target-version = "py310"
 
 [tool.ruff.lint]
-select = ["E", "F", "W", "I", "UP"]
+select = ["E", "F", "I", "UP", "B"]
+
+[tool.ruff.lint.per-file-ignores]
+# Recorded device output keeps its lines.
+"tests/**" = ["E501"]
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]