Tests

[MNT] extend CI to newer python versions, deprecate python versions 3.8, 3.9 after EOL, marking further failing tests as `xfail` #1609

Job	Run time
(ubuntu-latest, Py3.8, sk0.23.1, sk-only:false)	4s
docker	4s
(windows-latest, Py, sk0.24.*, sk-only:false)	3s
(ubuntu-latest, Py3.10, sk1.3.*, sk-only:true)	2m 12s
(ubuntu-latest, Py3.11, sk1.6.*, sk-only:true)	1m 54s
(ubuntu-latest, Py3.10, sk1.7.*, sk-only:true)	1m 57s
(ubuntu-latest, Py3.12, sk1.7.*, sk-only:true)	2m 17s
(ubuntu-latest, Py3.13, sk1.6.*, sk-only:true)	2m 5s
(ubuntu-latest, Py3.11, sk1.7.*, sk-only:true)	2m 6s
(ubuntu-latest, Py3.11, sk1.4.*, sk-only:true)	1m 58s
(ubuntu-latest, Py3.10, sk1.6.*, sk-only:true)	2m 14s
(ubuntu-latest, Py3.10, sk1.5.*, sk-only:true)	2m 5s
(ubuntu-latest, Py3.12, sk1.6.*, sk-only:true)	2m 17s
(ubuntu-latest, Py3.12, sk1.3.*, sk-only:true)	2m 8s
(ubuntu-latest, Py3.11, sk1.3.*, sk-only:true)	1m 59s
(ubuntu-latest, Py3.13, sk1.5.*, sk-only:true)	2m 2s
(ubuntu-latest, Py3.12, sk1.4.*, sk-only:true)	2m 16s
(ubuntu-latest, Py3.12, sk1.5.*, sk-only:true)	2m 8s
(ubuntu-latest, Py3.10, sk1.4.*, sk-only:true)	2m 7s
(windows-latest, Py3.12, sk1.5.*, sk-only:false)	14m 32s
(ubuntu-latest, Py3.13, sk1.7.*, sk-only:true)	2m 16s
(ubuntu-latest, Py3.11, sk1.5.*, sk-only:true)	2m 0s
(ubuntu-latest, Py3.12, sk1.5.*, sk-only:false)	11m 22s
	1h 4m 6s

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