workaround for a mypy 1.17 regression #2573

Job	Run time
cwltool release test	14m 1s
build_test_container	10m 59s
Test on macos-latest	4m 56s
Linters (pydocstyle)	23s
No leftovers	3m 2s
Linters (lintreadme)	32s
Linters (shellcheck)	11s
CWL conformance (v1.0, singularity)	6m 43s
CWL conformance (v1.0, docker)	6m 41s
CWL conformance (v1.1, docker)	6m 58s
CWL conformance (v1.0, podman)	6m 37s
CWL conformance (v1.1, singularity)	7m 47s
CWL conformance (v1.2, podman)	8m 23s
CWL conformance (v1.2, docker)	8m 5s
Tox (3, 10, lint)	27s
CWL conformance (v1.2, docker, --fast-parser)	8m 1s
Tox (3, 9, unit)	5m 11s
CWL conformance (v1.3.0-dev1, --relax-path-checks)	6m 9s
CWL conformance (v1.2, singularity)	8m 30s
Tox (3, 9, bandit)	28s
Tox (3, 10, bandit)	24s
Tox (3, 10, unit)	4m 59s
Tox (3, 9, lint)	30s
CWL conformance (v1.1, podman)	7m 10s
Tox (3, 10, mypy)	7m 25s
Tox (3, 11, lint)	31s
Tox (3, 9, mypy)	8m 5s
Tox (3, 11, bandit)	26s
Tox (3, 12, unit)	5m 5s
Tox (3, 13, unit)	5m 45s
Tox (3, 12, lint)	31s
Tox (3, 12, mypy)	7m 43s
Tox (3, 11, unit)	4m 51s
Tox (3, 11, mypy)	7m 13s
Tox (3, 13, lint)	31s
Tox (3, 13, mypy)	7m 40s
Tox (3, 12, bandit)	28s
Tox (3, 13, bandit)	24s
	3h 3m 45s

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