feat(gooddata-pipelines): Process workspace backup sequentially #962

Job	Run time
Collect changes / collect-changes	9s
Python tests / lint-and-format-check	43s
Python tests / types-check	1m 24s
Python tests / unit-tests (py312)	7m 40s
Python tests / unit-tests (py310)	3m 4s
Python tests / unit-tests (py39)	3m 6s
Python tests / unit-tests (py313)	3m 44s
Python tests / unit-tests (py311)	3m 8s
status-check	3s
	23m 1s

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