feat(gooddata-pipelines): make workspace data filter fields optional #1797

Job	Run time
Collect changes / collect-changes	8s
Python tests / types-check	13s
Python tests / lint-and-format-check	13s
Python tests / docs-scripts-tests	13s
Python tests / unit-tests (py314)	2m 35s
Python tests / unit-tests (py313)	2m 41s
Python tests / unit-tests (py310)	3m 25s
Python tests / unit-tests (py312)	2m 41s
Python tests / unit-tests (py311)	3m 28s
status-check	3s
	15m 40s

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