cibuildwheel: adjust pytest parallel execution ; drop musllinux_1_1 #2351

Job	Run time
CWL conformance (v1.0, docker)	6m 1s
CWL conformance (v1.0, singularity)	6m 4s
Tox (3, 9, lint)	27s
CWL conformance (v1.0, podman)	6m 6s
Tox (3, 9, unit)	5m 0s
build_test_container	9m 45s
CWL conformance (v1.1, docker)	7m 26s
Tox (3, 9, bandit)	28s
CWL conformance (v1.1, singularity)	7m 51s
Tox (3, 9, mypy)	6m 46s
CWL conformance (v1.1, podman)	7m 12s
Tox (3, 10, lint)	25s
No leftovers	3m 19s
CWL conformance (v1.2, docker)	8m 35s
Tox (3, 10, unit)	4m 59s
CWL conformance (v1.2, singularity)	9m 8s
Tox (3, 10, bandit)	22s
CWL conformance (v1.2, podman)	9m 4s
Tox (3, 10, mypy)	6m 32s
Test on macos-latest	5m 51s
Tox (3, 11, lint)	27s
CWL conformance (v1.2, docker, --fast-parser)	8m 52s
Tox (3, 11, unit)	4m 29s
CWL conformance (v1.3.0-dev1, --relax-path-checks)	5m 55s
Tox (3, 11, bandit)	29s
cwltool release test	23s
Tox (3, 11, mypy)	6m 5s
Linters (lintreadme)	34s
Tox (3, 12, lint)	29s
Linters (shellcheck)	15s
Tox (3, 12, unit)	6m 8s
Linters (pydocstyle)	17s
Tox (3, 12, bandit)	27s
Tox (3, 12, mypy)	6m 43s
Tox (3, 13, lint)	42s
Tox (3, 13, unit)	6m 29s
Tox (3, 13, bandit)	32s
Tox (3, 13, mypy)	1m 5s
	2h 41m 42s

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