tests

Bump Ruff to 0.8.0 #5960

Job	Run time
test (3.9, ubuntu-latest)	4m 30s
collateral (diffcov)	5m 24s
test (3.9, windows-latest)	4m 36s
collateral (docs)	1m 47s
test (3.13, ubuntu-latest)	4m 43s
test (3.13, macos-latest)	4m 1s
test_cygwin (39, windows-latest)	12m 41s
test (3.13, windows-latest)	4m 35s
test (3.10, ubuntu-latest)	4m 26s
test (3.11, ubuntu-latest)	4m 29s
test (3.12, ubuntu-latest)	4m 46s
test (3.14, ubuntu-latest)	4m 46s
test (pypy3.10, ubuntu-latest, stdlib)	4m 44s
test (ubuntu-latest, 3.10, stdlib)	4m 21s
integration-test	0s
check	3s
release	0s
	1h 9m 52s

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