Tests

[ENH] move `utils` module to folder #1767

Job	Run time
(ubuntu-latest, Py3.8, sk0.23.1, sk-only:false)	3s
docker	4s
(windows-latest, Py, sk0.24.*, sk-only:false)	2s
(ubuntu-latest,Py3.11,sk1.7.*,sk-only:true)	55s
(ubuntu-latest,Py3.11,sk1.4.*,sk-only:true)	55s
(ubuntu-latest,Py3.10,sk1.5.*,sk-only:true)	56s
(ubuntu-latest,Py3.10,sk1.6.*,sk-only:true)	1m 3s
(ubuntu-latest,Py3.10,sk1.7.*,sk-only:true)	1m 6s
(ubuntu-latest,Py3.11,sk1.3.*,sk-only:true)	56s
(ubuntu-latest,Py3.11,sk1.6.*,sk-only:true)	1m 0s
(ubuntu-latest,Py3.10,sk1.3.*,sk-only:true)	54s
(ubuntu-latest,Py3.13,sk1.5.*,sk-only:true)	4m 10s
(ubuntu-latest,Py3.12,sk1.4.*,sk-only:true)	1m 5s
(ubuntu-latest,Py3.11,sk1.5.*,sk-only:true)	58s
(ubuntu-latest,Py3.10,sk1.4.*,sk-only:true)	58s
(ubuntu-latest,Py3.14,sk1.7.*,sk-only:true)	1m 9s
(ubuntu-latest,Py3.12,sk1.5.*,sk-only:true)	1m 1s
(ubuntu-latest,Py3.12,sk1.6.*,sk-only:true)	1m 3s
(ubuntu-latest,Py3.13,sk1.6.*,sk-only:true)	1m 3s
(ubuntu-latest,Py3.12,sk1.7.*,sk-only:true)	1m 1s
(windows-latest,Py3.12,sk1.5.*,sk-only:false)	3m 14s
(ubuntu-latest,Py3.14,sk1.7.*,sk-only:false)	2m 50s
(ubuntu-latest,Py3.12,sk1.3.*,sk-only:true)	57s
(ubuntu-latest,Py3.14,sk1.6.*,sk-only:true)	5m 17s
(ubuntu-latest,Py3.13,sk1.7.*,sk-only:true)	1m 7s
(ubuntu-latest,Py3.14,sk1.5.*,sk-only:true)	4m 15s
(ubuntu-latest,Py3.12,sk1.5.*,sk-only:false)	5m 12s
	43m 14s

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