MAINT: Upgrade to `ruff==0.8.4` (#3022) #5813

Job	Run time
pytest on windows	6m 56s
Build & verify package	12s
pytest on 3.8 (crypto-lib: cryptography)	5m 36s
Check code style issues	35s
pytest on 3.9 (crypto-lib: cryptography)	5m 35s
pytest on 3.10 (crypto-lib: cryptography)	5m 26s
pytest on 3.11 (crypto-lib: cryptography)	4m 58s
pytest on 3.12 (crypto-lib: cryptography)	6m 44s
pytest on 3.13 (crypto-lib: cryptography)	6m 34s
pytest on 3.8 (crypto-lib: pycryptodome)	5m 44s
pytest on 3.8 (crypto-lib: none)	5m 52s
Combine & check coverage.	13s
	54m 25s

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