Upgrade ruff to 0.8.1 and fix existing issues #5577

Job	Run time
package	16s
build (windows-py39-unittestextras)	9m 15s
build (windows-py39-pluggy)	3m 6s
build (windows-py39-xdist)	3m 10s
build (windows-py310)	3m 15s
build (windows-py311)	5m 10s
build (windows-py312)	5m 57s
build (windows-py313)	6m 23s
build (ubuntu-py39-lsof-numpy-pexpect)	10m 31s
build (ubuntu-py39-pluggy)	1m 43s
build (ubuntu-py39-freeze)	46s
build (ubuntu-py39-xdist)	1m 38s
build (ubuntu-py310-xdist)	1m 45s
build (ubuntu-py311)	5m 17s
build (ubuntu-py312)	7m 45s
build (ubuntu-py313-pexpect)	7m 55s
build (ubuntu-pypy3-xdist)	3m 34s
build (macos-py39)	2m 39s
build (macos-py310)	1m 26s
build (macos-py312)	1m 25s
build (macos-py313)	1m 10s
build (doctesting)	45s
build (plugins)	52s
check	1s
	1h 25m 44s

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