Update ruamel-yaml requirement from <0.18,>=0.16.0 to >=0.16.0,<0.19 … #2369

Job	Run time
No leftovers	2m 54s
CWL conformance (v1.0, docker)	6m 6s
CWL conformance (v1.0, singularity)	6m 11s
cwltool release test	13m 6s
CWL conformance (v1.0, podman)	6m 20s
Tox (3, 9, lint)	26s
CWL conformance (v1.1, docker)	6m 51s
Tox (3, 9, unit)	5m 3s
CWL conformance (v1.1, singularity)	8m 11s
Linters (lintreadme)	33s
Tox (3, 9, bandit)	23s
CWL conformance (v1.1, podman)	7m 9s
Linters (shellcheck)	12s
Tox (3, 9, mypy)	6m 32s
CWL conformance (v1.2, docker)	8m 4s
Linters (pydocstyle)	22s
Tox (3, 10, lint)	26s
CWL conformance (v1.2, singularity)	9m 0s
Tox (3, 10, unit)	4m 55s
CWL conformance (v1.2, podman)	8m 54s
Tox (3, 10, bandit)	26s
CWL conformance (v1.2, docker, --fast-parser)	8m 35s
Tox (3, 10, mypy)	6m 25s
CWL conformance (v1.3.0-dev1, --relax-path-checks)	5m 32s
Tox (3, 11, lint)	24s
Tox (3, 11, unit)	4m 41s
Tox (3, 11, bandit)	24s
build_test_container	9m 26s
Tox (3, 11, mypy)	5m 52s
Tox (3, 12, lint)	27s
Tox (3, 12, unit)	6m 11s
Test on macos-latest	5m 1s
Tox (3, 12, bandit)	21s
Tox (3, 12, mypy)	6m 44s
Tox (3, 13, lint)	37s
Tox (3, 13, unit)	6m 18s
Tox (3, 13, bandit)	29s
Tox (3, 13, mypy)	56s
	2h 50m 27s

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