Add OpenPBS tests to the CI/CD pipeline

[GlassOfWhiskey]

This commit adds a Docker-based OpenPBS cluster to the set of target architectures for CI tests, ensuring that the PBSConnector is properly tested.

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
253	1	252	3

View the top 1 failed test(s) by shortest run time

cwl-v1.1-6397014050177074c9ccd0d771577f7fa9f728a3/conformance_tests.cwltest.yaml::conformance_tests::cwltest::yaml::timelimit_zero_unlimited_wf

Stack Traces | 10.1s run time

CWL test execution failed. 
expected: {
    "o": "time passed"
}
got: {}
caused by: failed comparison for key 'o': expected: "time passed"
got: null
Test: job: 
  file:.../streamflow/streamflow/cwl-v1.1-6397014050177074c9ccd0d771577f7fa9f728a3/tests/empty.json
output:
  o: time passed
tool: 
  file:.../streamflow/streamflow/cwl-v1.1-6397014050177074c9ccd0d771577f7fa9f728a3/tests/timelimit3-wf.cwl
label: timelimit_zero_unlimited_wf
doc: Test zero timelimit means no limit in workflow
tags:
- workflow
- timelimit
- inline_javascript
id: 221
line: '2849'

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