feat(pyproject): add `N` (pep8 naming) rule to ruff config... #298

Job	Run time
client-generation	3m 19s
Unit test - ./extensions/gubbins/gubbins-core	1m 26s
Build wheels	1m 1s
Unit test - ./extensions/gubbins/gubbins-db	1m 29s
Unit test - ./extensions/gubbins/gubbins-routers	2m 0s
Unit test - ./extensions/gubbins/gubbins-client	1m 31s
Unit test - ./extensions/gubbins/gubbins-cli	1m 41s
build-image	2m 35s
pytest-integration	12m 1s
	27m 3s

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