Use Ruff default ruleset, in addition to our own set #1050

Job	Run time
bugwarrior-multiarch-test (ppc64le)	6m 28s
bugwarrior-development-pip-test	43s
bugwarrior-test (3.13)	28s
bugwarrior-test (3.12)	34s
bugwarrior-test (3.11)	30s
bugwarrior-test (3.14)	32s
	9m 15s

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