fix the pickling error for IO objects #1853

Job	Run time
build_test_container	14m 35s
No leftovers	7m 1s
CWL conformance (v1.0, docker)	7m 28s
Test on macos-latest	7m 43s
CWL conformance (v1.0, singularity)	7m 35s
CWL conformance (v1.0, podman)	8m 9s
CWL conformance (v1.1, docker)	8m 43s
cwltool release test	24m 42s
CWL conformance (v1.1, singularity)	11m 49s
CWL conformance (v1.1, podman)	11m 12s
Tox (3, 8, lint)	38s
CWL conformance (v1.2, docker)	12m 38s
Linters (lintreadme)	2m 33s
Tox (3, 8, unit)	10m 32s
Linters (shellcheck)	35s
CWL conformance (v1.2, singularity)	16m 5s
Tox (3, 8, bandit)	31s
Linters (pydocstyle)	40s
Tox (3, 8, mypy)	11m 47s
CWL conformance (v1.2, podman)	12m 17s
CWL conformance (v1.2, docker, --fast-parser)	10m 23s
Tox (3, 9, lint)	36s
Tox (3, 9, unit)	9m 22s
Tox (3, 9, bandit)	37s
Tox (3, 9, mypy)	10m 7s
Tox (3, 10, lint)	46s
Tox (3, 10, unit)	10m 11s
Tox (3, 10, bandit)	40s
Tox (3, 10, mypy)	11m 44s
Tox (3, 11, lint)	30s
Tox (3, 11, unit)	9m 37s
Tox (3, 11, bandit)	37s
Tox (3, 11, mypy)	8m 56s
Tox (3, 12, lint)	59s
Tox (3, 12, unit)	15m 13s
Tox (3, 12, bandit)	44s
Tox (3, 12, mypy)	12m 26s
	4h 40m 41s

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