upgrades to mypy 1.6 #3046

Job	Run time
changes	6s
cluster_tools (multiprocessing, 3.11)	4m 4s
webknossos_linux (3.11, 1)	16m 11s
cluster_tools (multiprocessing, 3.10)	3m 24s
webknossos_linux (3.11, 2)	12m 24s
cluster_tools (multiprocessing, 3.9)	3m 24s
webknossos_linux (3.11, 3)	20m 29s
cluster_tools (multiprocessing, 3.8)	3m 13s
webknossos_linux (3.10, 1)	11m 38s
cluster_tools (slurm, 3.11)	6m 43s
webknossos_linux (3.10, 2)	14m 46s
cluster_tools (slurm, 3.10)	6m 58s
webknossos_linux (3.10, 3)	16m 0s
cluster_tools (slurm, 3.9)	6m 58s
cluster_tools (slurm, 3.8)	6m 57s
cluster_tools (kubernetes, 3.11)	5m 45s
cluster_tools (kubernetes, 3.10)	6m 35s
webknossos_linux (3.9, 1)	14m 34s
cluster_tools (kubernetes, 3.9)	6m 21s
webknossos_linux (3.9, 2)	11m 59s
cluster_tools (kubernetes, 3.8)	7m 0s
webknossos_linux (3.9, 3)	14m 11s
webknossos_linux (3.8, 1)	11m 43s
webknossos_linux (3.8, 2)	11m 8s
webknossos_linux (3.8, 3)	18m 36s
docs	1m 57s
webknossos_cli_docker	2m 27s
pypi_and_gh_release	0s
complete	1s
	4h 5m 32s

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