feat(gooddata-pipelines): make workspace data filter fields optional #1807

Job	Run time
Collect changes / collect-changes	11s
Python tests / types-check	14s
Python tests / docs-scripts-tests	14s
Python tests / lint-and-format-check	12s
Python tests / unit-tests (py311)	3m 30s
Python tests / unit-tests (py310)	3m 28s
Python tests / unit-tests (py313)	2m 48s
Python tests / unit-tests (py314)	3m 14s
Python tests / unit-tests (py312)	2m 49s
status-check	3s
	16m 43s

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