fixes by ruff #3184

Job	Run time
Initial setup	3s
devmirror lint	1m 59s
devmirror abvar/fq bianchi_modular_forms number_fields	3m 33s
devmirror galois_groups siegel_modular_forms	3m 4s
devmirror elliptic_curves hecke_algebras tests	1m 53s
devmirror hilbert_modular_forms sato_tate_groups tests	2m 12s
devmirror api characters cluster_pictures ecnf local_fields	6m 33s
devmirror belyi higher_genus_w_automorphisms hypergm lattice maass_forms tests users	2m 37s
devmirror artin_representations genus2_curves	2m 52s
devmirror classical_modular_forms	10m 53s
devmirror lfunctions	3m 52s
devmirror groups/abstract	4m 28s
devmirror modular_curves	3m 41s
	47m 40s

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